Aplex Pump

7/14/2019 Aplex Pump

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Triplex Pumps

INSTALLATION AND SERVICE MANUAL A-03-350 12/1© 2011 Pentair Pump Group, Inc.

MA-95L

MA-95M

MA-120L

MA-120L-HD

MA-120M

SC-170

SC-170L

SC-170H

SC-170DD

RO-174

RO-185

Series



Engineering Data

MA-95L ............................................................. 3

MA-95M ............................................................ 4

MA-120L ........................................................... 5

MA-120L-HD ..................................................... 6

MA-120M ..........................................................7

SC-170L ........................................................... 8

SC-170 ............................................................. 9SC-170H .........................................................10

SC-170DD ....................................................... 11

RO-174 ........................................................... 12

RO-185 ........................................................... 13

Dimensional Data ...........................................14–15

Installation, Operation, Lubrication, Maintenance

and Storage Instructions....................................... 16

Saety ............................................................. 16

Storage............................................................ 16

Pump Location and Piping Design ......................16

Suction Piping ............................................16–17

Acceleration Head ............................................ 17

Discharge Piping .........................................17–18

Bypass Piping .................................................. 18

Lubrication ...................................................... 18

V-Belt Drive ............................................... 18, 20

Suggested Piping System or Plunger Pumps ...... 19

Direction o Rotation ......................................... 20

Automatic (Saety) Shutdowns ........................... 20

Crankshat Assembly ............................................ 20

General ........................................................... 20

Tapered Roller Bearings ...............................20–21

Cup Installation ................................................ 21

Installing Crankshat ............................................ 21

Shim Adjustment o Tapered Roller Bearings ....... 21

Installation o Crankshat Oil Seal ......................21

Lube Oil Pump Assembly .............................21–22

Disassembly ..................................................... 22

Connecting Rod, Crosshead, Extension Rod, Crosshead

Pin and Wiper Box Assembly/Disassembly .............. 22

General ........................................................... 22

Installing Wrist Pin Bushings ............................. 23Pinning the Crosshead ......................................23

Order o Assembly ............................................ 23

Precision Crankpin (Crankthrow) Bearings ......23–24

Oil Scoop ........................................................ 24

Wiper Box Assembly .............................................24

General ........................................................... 24

“Poly Pak” Seal ............................................... 24

Mechanical Oil Seal .......................................... 24

Inserting the Plunger ........................................ 25

Stufng Box, Packing and Plunger Assemblies ....... 25

General ........................................................... 25

Spring Loaded Packing ..................................... 25

J-Style Stung Box & Plunger Assembly

(Styles 838 and 858) ....................................... 26

Inserting the Plunger ........................................ 26

Installing the Gland .......................................... 26

Installing the Stung Box ................................. 27Connecting the Plunger ..................................... 27

Packing ........................................................... 27

Plungers .......................................................... 27

Disc Valve Systems and Abrasion Resistant ............28

General ........................................................... 28

Disc Valve and Abrasion Resistant Valve

Construction .................................................... 28

Setting the Valve Seat ....................................... 28

Installing O-Rings, Abrasion Resistant Spring

and Cage ......................................................... 29

Installing Disc, Spring, Disc Valves and Stem ...... 29Valve Spring Options ......................................... 29

Valve Disc Options ............................................ 29

Pulling the Valve Seat ....................................... 29

Salvage o Worn Seats ....................................... 30

Other Pump Brands .......................................... 30

Trouble Location and Remedy ..........................30–32

Parts Lists......................................................33–42

Warranty ............................................................. 44



Series

MA-95L ENGINEERING DATA

Power End

Model Triplex Pump MA-95L

Maximum Input HP at Speed 95 at 450 rpm

Rated Continuous Plunger Load 6,259 lbs.

Stroke 4"

Maximum Rated Continuous Speed 450 rpm

Normal Continuous Speed Range 150 to 420 rpm

Minimum Speed 100 rpm

Oil Capacity 18 U.S. Quarts

Viscosity, S.S.U. at 210ºF 70 to 84

Power End Oiling System Splash & Scoop

Power Frame, One Piece Cast Iron

Crosshead, Full Cylindrical Cast Iron

Crosshead, Diameter x Length 5-3/4" x 6-3/16"

Crankshat Ductile Iron

Crankshat Diameters:At Drive Extension

At Tapered Roller Bearings

At Crankpin Bearings, Diameter x Length

3.750/3.749"

4"

4" x 3"

Crosshead (Wrist) Pin, Case-Hardened and Ground AISI 8620

Wrist Pin Bushing, SAE 660, Diameter x Width 4" x 3"

Main Bearings, Tapered Roller Timken

Center Bearings,

Two, Precision

Steel Backed,

Babbitt-Lined

Crankpin Bearings,

Precision Automotive

Steel Backed,

Babbitt-Lined

Extension (Pony) Rod:Diameter

Material

2"

316 S.S.

Connecting Rod, Automotive Type Ductile Iron

Average Crosshead Speed:

At 450 rpm

At 150 rpm

300 pm

100 pm

Minimum Lie Expectancy, Main Bearings, L10 60,000+hr

Liquid End

Plunger Size Range, Diameter 2-3/8" thru 3-1/2"

Maximum Continuous Working Pressure 1,264 psi

Hydrostatic Test:

Discharge

Suction

1,896 psi

425 psi

Discharge Connection Size 2-1/2" NPTF

Suction Connection Size 5" NPTF

Maximum Working Pressure Suction Maniold 275 psi

Available Liquid End Materials, ASTM:

Nickel Aluminum Bronze

Forged Steel Block

Ductile Iron

Stainless Steel

B148-C955

A105

A536 80-55-06

Various Grades


Liquid End (Continued)

Plunger Type Rokide® Stainless Steel:

Chromium Oxide-Coated 316 S.S.

Stung Boxes, Field-Removable and Replaceable:

Aluminum Bronze

Stainless Steel, Hardened

Carbon Steel

B148-C955

17-4PH

1020

Packing Types Available:

Gland-loaded, Nonadjustable

Spring-loaded, Cup-Type

Spring-loaded, Braided Tefon® & Kevlar®

Spring-loaded, Garlock

Style 838

Style 120X

Style 140/141

Style 8921K

Seals, Stung Boxes, Valve Covers, Cylinder Heads Buna-N

Studs, Material,

ASTM

A193 Grade B7,

Cadmium Plated

Available Valve Types:

Optional, Hardened and Lapped 17-4PH S.S.

Valve Spring Material Inconel®

Valve Seat, Liquid Passage Areas 6.26 sq. in.

Average Liquid Velocity, with 3-1/2" Plungers:

At 450 Crankshat rpm 8.45 ps

Average Liquid Velocity, 3-1/2" Plungers at 450 rpm:

Suction Maniold

Discharge Maniold

3.60 ps

17.02 ps

General

Overall Dimensions:

Length

Width

Height

50-1/4"

38-1/8"

19-5/8"

Approximate Weights:With Aluminum Bronze Liquid End

With Forged Steel Liquid End

1,725 lbs.

1,860 lbs.



MA-95M ENGINEERING DATA

Power End

Model Triplex Pump MA-95M



Stroke 4"






Power End Oiling System Splash








3.750/3.749"

4"

4" x 3"




Crankpin Bearings,


Steel Backed,

Babbitt-Lined

Extension (Pony) Rod:

Diameter

Material

2"

17-4PH S.S.



At 450 rpm 318 pm


Liquid End

Plunger Size Range, Diameter 1-1/2" Thru 2-1/4"


Hydrostatic Test:

Discharge

Suction

5,400 psi

425 psi

Discharge Connection Size 2" ANSI 1500RF

Suction Connection Size 3" ANSI 150RF



Forged Steel Block

B148-C955

A105




Aluminum Bronze

Carbon Steel

B148-C955

1020








Style 838

Style 120X

Style 140/141

Style 8921K


Studs, Material,

ASTM

A193 Grade B7,

Cadmium Plated


Regularly Furnished, Acetal Resin

Optional, Hardened and Lapped

Delrin®

17-4PH S.S.






Suction ManioldDischarge Maniold 4.47 ps10.09 ps

General

Overall Dimensions:

Length

Width

Height

48-3/4"

42-5/8"

19-5/8"

Approximate Weights:

With Aluminum Bronze Liquid End

With Ductile Iron Liquid End


1,950 lbs.

1,875 lbs.

2,085 lbs.



Series


Power End

Model Triplex Pump MA-120L



Stroke 4-1/4"






Power End

Oiling System

Full Pressure

Lubrication




Crankshat Ductile IronCrankshat Diameters:

At Drive Extension



3.750/3.749"

4"

4" x 3"




Crankpin Bearings,


Steel Backed,

Babbitt-Lined


Diameter

Material

2"

316 S.S.



At 450 rpm

At 150 rpm

318 pm

106 pm


Liquid End



Hydrostatic Test:

Discharge

Suction

2,523 psi

425 psi

Discharge Connection Size 2-1/2" ANSI 900 LF

Suction Connection Size 5" ANSI 150 FF




Forged Steel Block

Ductile Iron

Stainless Steel

B148-C955

A105

A536 80-55-06

Various Grades






Aluminum Bronze


Carbon Steel

B148-C955

17-4PH

1020






Style 838

Style 120X

Style 140/141

Style 8921K


Studs, Material,

ASTM

A193 Grade B7,

Cadmium Plated


Standard, Acetal Resin


Delrin®

17-4PH S.S.






Suction Maniold

Discharge Maniold

3.60 ps

17.02 ps

General

Overall Dimensions:

Length

Width

Height

49"

42-5/8"

19-1/16"




1,725 lbs.

1,860 lbs.



MA-120L-HD ENGINEERING DATA

Power End

Model Triplex Pump MA-120L-HD



Stroke 4-1/4"






Power End

Oiling System

Full Pressure

Lubrication




Crankshat Forged andNitrided Alloy Steel

Crankshat Diameters:

At Drive Extension



3.750/3.749"

4"

4" x 3"




Crankpin Bearings,


Steel Backed,

Babbitt-Lined


DiameterMaterial

2"316 S.S.



At 450 rpm

At 150 rpm

318 pm

106 pm


Liquid End



Hydrostatic Test:

DischargeSuction

2,523 psi425 psi

Discharge Connection Size 2-1/2" ANSI 900 LF

Suction Connection Size 5" ANSI 150 FF




Forged Steel Block

Ductile Iron

Stainless Steel

B148-C955

A105

A536 80-55-06

Various Grades

MA-120L-HD ENGINEERING DATA





Aluminum Bronze


Carbon Steel

B148-C955

17-4PH

1020






Style 838

Style 120X

Style 140/141

Style 8921K


Studs, Material,

ASTM

A193 Grade B7,

Cadmium Plated


Standard, Acetal Resis


Delrin®

17-4PH S.S.






Suction Maniold

Discharge Maniold

3.60 ps

17.02 ps

General

Overall Dimensions:

Length

Width

Height

49"

42-5/8"

19-1/16"




1,725 lbs.

1,860 lbs.



Series


Power End

Model Triplex Pump MA-120M



Stroke 4-1/4"






Power End

Oiling System

Pressure

Lubrication





At Drive Extension



3.750/3.749"

4"

4" x 3"




Crankpin Bearings,


Steel Backed,

Babbitt-Lined


Diameter

Material

2"

17-4PH S.S.



At 450 rpm 318 pm


Liquid End



Hydrostatic Test:

Discharge

Suction

5,400 psi

425 psi

Discharge Connection Size 2" NPTF




Forged Steel Block

B148-C955

A105






Aluminum Bronze

Carbon Steel

B148-C955

1020






Style 838

Style 120X

Style 140/141

Style 8921K


Studs, Material,

ASTM

A193 Grade B7,

Cadmium Plated




Delrin®

17-4PH S.S.



Average Liquid Velocity, with 2-1/4" Plungers:At 450 Crankshat rpm 8.97 ps


Suction Maniold

Discharge Maniold

4.47 ps

10.09 ps

General

Overall Dimensions:

Length

Width

Height

48-3/4"

42-5/8"

19-5/8"





1,950 lbs.

1,875 lbs.

2,085 lbs.



SC-170L ENGINEERING DATA

Power End

Model Triplex Pump SC-170L



Stroke 4-1/4"






Power End

Oiling System

Pressure

Lubrication




Crankshat Forged Steel andNitrided


At Drive Extension



3.750/3.749"

4"

4" x 3"




Crankpin Bearings,


Steel Backed,

Babbitt-Lined


DiameterMaterial

2"17-4PH S.S.



At 450 rpm 318 pm


Liquid End

Plunger Size Range, Diameter 3" Thru 4"


Hydrostatic Test:

Discharge

Suction

3,250 psi

425 psi

Discharge Connection Size 2-1/2" ANSI 900LF

Suction Connection Size 5" ANSI 150LF



Forged Steel Block

Ductile Iron

B148-C955

A105

A536 80-55-06


Rokide®

TX

316 S.S.

416 S.S.

SC-170L ENGINEERING DATA



Aluminum Bronze

Carbon Steel

B148-C955

1020

Piston Liner:

Chrome Oxide Coated

High Chrome Iron

4121

4121






Style 838

Style 120X

Style 140/141

Style 8921K

Piston Cups Available:

Urethane

Nitrile

HSN and Kevlar®


Studs, Material,

ASTM

A193 Grade B7,

Cadmium Plated


Regularly Furnished


Abrasion Resistant

17-4PH S.S.



Average Liquid Velocity, with 4" Plungers:


Average Liquid Velocity, 4" Plungers at 450 rpm:

Suction Maniold

Discharge Maniold

4.9 ps

23.5 ps

General

Overall Dimensions:

Length

Width

Height

50-1/4"

42-5/8"

19-5/8"





2,050 lbs.

1,975 lbs.

2,185 lbs.



Series

SC-170 ENGINEERING DATA

Power End

Model Triplex Pump SC-170



Stroke 4-1/4"






Power End

Oiling System

Pressure

Lubrication




Crankshat NitridedForged Steel


At Drive Extension



3.750/3.749"

4"

4" x 3"




Crankpin Bearings,


Steel Backed,

Babbitt-Lined


DiameterMaterial

2"17-4PH S.S.



At 450 rpm

At 150 rpm

300 pm

100 pm


Liquid End



Hydrostatic Test:

DischargeSuction

4,500 psi425 psi





Forged Steel Block A105

SC-170 ENGINEERING DATA





Carbon Steel 1020

Packing Types Available:Gland-loaded, Nonadjustable




Style 838

Style 120X

Style 140/141

Style 8921K


Studs, Material,

ASTM

A193 Grade B7,

Cadmium Plated


Optional, Hardened and Lapped 17-4PH S.S.



Average Liquid Velocity, with 3-1/8" Plungers:At 450 Crankshat rpm

At 150 Crankshat rpm

9.71 ps

3.23 ps


Suction Maniold

Discharge Maniold

4.54 ps

10.24 ps

General

Overall Dimensions:

Length

Width

Height

49"

36"

18-1/4"


With Forged Steel Liquid End 1,850 lbs.



SC-170H ENGINEERING DATA

Power End

Model Triplex Pump SC-170H



Stroke 4-1/4"





Viscosity, S.S.U.at 210ºF 70 to 84

Power End

Oiling System

Pressure

Lubrication




Crankshat NitridedForged Steel


At Drive Extension



3.750/3.749"

4"

4" x 3"




Crankpin Bearings,


Steel Backed,

Babbitt-Lined


DiameterMaterial

2"17-4PH S.S.



At 450 rpm

At 150 rpm

300 pm

100 pm


Liquid End



Hydrostatic Test:

DischargeSuction

9,640 psi425 psi

Discharge Connection Size 2" NPTF




Forged Steel Block 4140

SC-170H ENGINEERING DATA





Carbon Steel 1020

Packing Types Available:Spring-loaded, Cup-Type

Spring-loaded, Braided Kevlar®

Style 120X

Style 140


Studs, Material,

ASTM

A193 Grade B7,

Cadmium Plated


Hardened and Lapped Disc.

Optional, Dual Stem Guided

Optional, Abrasion Resistant

17-4PH S.S.

17-4PH S.S.

17-4PH S.S.



At 450 Crankshat rpm 8.0 psAverage Liquid Velocity, 1-5/8" Plungers at 450 rpm:

Suction Maniold

Discharge Maniold

3.4 ps

7.6 ps

General

Overall Dimensions:

Length

Width

Height

49"

36"

18-1/4"


With Forged Steel Liquid End 2,025 lbs.



Series

SC-170DD ENGINEERING DATA

Power End

Model Triplex Pump SC-170DD



Stroke 4-1/4"






Power End

Oiling System

Pressure

Lubrication




Crankshat Forged Steeland Nitrided


At Drive Extension



3.750/3.749"

4"

4" x 3"




Crankpin Bearings,


Steel Backed,

Babbitt-Lined


DiameterMaterial

2"17-4PH S.S.



At 450 rpm 318 pm


Liquid End

Plunger Size Range, Diameter 4" Thru 4-1/2"


Hydrostatic Test:

Discharge

Suction

3,250 psi

425 psi

Discharge Connection Size 3" ANSI 600FF

Suction Connection Size 6" ANSI 150FF


Ductile Iron A536 80-55-06

Piston Liner:

Chromed Steel

High Chrome Iron

4140

4140

SC-170DD ENGINEERING DATA


Piston Cups Available:

Urethane

Nitrile

HSN and Kevlar®

Seals, Stung Boxes, Valve Covers, Cylinder Heads Tefon®

Studs, Material,

ASTM

A193 Grade B7,

Cadmium Plated

Valve Type:

Regularly Furnished Abrasion Resistant



Average Liquid Velocity, 4" Plungers at 450 rpm:


Suction Maniold 3.4 ps

Discharge Maniold 16.3 ps

GeneralOverall Dimensions:

Length

Width

Height

53"

42-5/8"

29-1/4"


With Ductile Iron Liquid End 2,415 lbs.



RO-174 ENGINEERING DATA

Power End

Model Triplex Pump RO-174



Stroke 4"






Power End Oiling System Splash and Scoop








3.750/3.749"

4"

4" x 3"




Crankpin Bearings,


Steel Backed,

Babbitt-Lined


Diameter

Material

2"

17-4PH S.S.



At 450 rpm

At 150 rpm

300 pm

100 pm


Liquid End



Hydrostatic Test:

Discharge

Suction

3,100 psi

425 psi

Discharge Connection Size 2-1/2"-900 NPTF

Suction Connection Size 5"-150 NPTF




Stainless Steel

B148-C955

Various Grades






Aluminum Bronze


B148-C955

17-4PH S.S.




Style 120X

Style 8921K


Studs, Material,

ASTM

A193 Grade B7,

Cadmium Plated


Standard, Acetal Resin


Delrin®

17-4PH S.S.






7.68 ps

2.56 psAverage Liquid Velocity, 3-1/2" Plungers at 450 rpm:

Suction Maniold

Discharge Maniold

3.60 ps

17.02 ps

General

Overall Dimensions:

Length

Width

Height

50-1/4"

38-1/8"

19-5/8"



With Stainless Steel Liquid End

1,725 lbs.

1,860 lbs.



Series


Power End

Model Triplex Pump RO-185



Stroke 4-1/4"






Power End

Oiling System

Pressure

Lubrication





At Drive Extension



3.750/3.749"

4"

4" x 3"




Crankpin Bearings,


Steel Backed,

Babbitt-Lined


Diameter

Material

2"

17-4PH S.S.



At 450 rpm 318 pm


Liquid End

Plunger Size Range, Diameter 2" Thru 3-1/2"


Hydrostatic Test:

Discharge

Suction

3,250 psi

425 psi





Stainless Steel Block

B148-C955

2205 Duplex S.S.






Aluminum Bronze

Stainless Steel

B148-C955

316




Style 120X

Style 8921K


Studs, Material,

ASTM

A193 Grade B7,

Cadmium Plated




Delrin®

17-4PH S.S.





Average Liquid Velocity, 3-1/2" Plungers at 450 rpm:Suction Maniold

Discharge Maniold

3.82 ps

18.09 ps

General

Overall Dimensions:

Length

Width

Height

50-1/4"

42-5/8"

19-5/8"



With Stainless Steel Liquid End

2,050 lbs.

2,185 lbs.



CROSS-SECTION

Re. No. MA-95L MA-95M MA-120L MA-120L-HD MA-120M SC-170 SC-170L SC-170H SC-170DD RO-174 RO-185A1 – 8-7/8 8-7/8 8-7/8 8-7/8 – – 8-7/8 – – 8-7/8

A2 36 42-5/8 42-5/8 42-5/8 42-5/8 36 36 42-5/8 46-3/4 36 42-5/8

A3 21-1/2 21-1/2 21-1/2 21-1/2 21-1/2 21-1/2 21-1/2 21-1/2 22-5/16 21-1/2 21-1/2

A4 23-3/8 23-3/8 23-3/8 23-3/8 23-3/8 – 23-3/8 – 24 23-3/8 23-3/8

A5 11-11/16 11-11/16 11-11/16 11-11/16 11-11/16 – 11-11/16 – – 11-11/16 11-11/16

B1 49 48-1/2 49 49 48-1/2 – 49 – 53 49 49

B2 38-1/4 37-1/2 38-1/4 38-1/4 37-1/2 – 38-1/4 – 38-7/8 38-1/4 38-1/4

B3 19-1/16 17-15/16 19-1/16 19-1/16 17-15/16 – 19-1/16 – – 19-1/16 19-1/16

B4 9-1/4 9-1/4 9-1/4 9-1/4 9-1/4 – 9-1/4 – – 9-1/4 9-1/4

B5 10-1/8 8-1/4 10-1/8 10-1/8 8-1/4 – 10-1/8 – 16-1/2 10-1/8 10-1/8

B6 4-1/8 5-1/4 4-1/8 4-1/8 5-1/4 – 4-1/8 – 5-3/4 4-1/8 4-1/8

B7 25-1/8 25-1/8 25-1/8 25-1/8 25-1/8 – 25-1/8 – 25-1/4 25-1/8 25-1/8

(B) Discharge

Connections

2-1/2" ANSI

900 LF2" 1500

2-1/2" ANSI

900 LF

2-1/2" ANSI

900 LF2" 1500 –

2-1/2" ANSI

900 LF– 3" 600# FF

2-1/2" ANSI

900 LF

2-1/2" ANSI

900 LF

(B) Suction

Connections

5" ANSI

150 FF3" 150

5" ANSI

150 FF

5" ANSI

150 FF3" 150 –

5" ANSI

150 FF– 6" 150# FF

5" ANSI

150 FF

5" ANSI

150 FF

C1 49-13/16 48-7/16 49-13/16 49-13/16 48-7/16 48-7/8 49-13/16 – – 49-13/16 49-13/16

C2 38-1/4 37-1/2 38-1/4 38-1/4 37-1/2 38 38-1/4 37-1/2 – 38-1/4 38-1/4

C3 – 18-7/16 – – 18-7/16 – – – – – –

C4 – 9-1/4 – – 9-1/4 9-1/4 – 9-1/4 – – –

C5 10-1/2 8-1/2 10-1/2 10-1/2 8-1/2 9-3/8 10-1/2 8-7/16 – 10-1/2 10-1/2

C6 3-1/4 5 3-1/4 3-1/4 5 4-1/4 3-1/4 5-1/16 – 3-1/4 3-1/4

C7 33-1/4 33 33-1/4 33-1/4 33 – 33-1/4 – – 33-1/4 33-1/4

C8 31-5/8 30 31-5/8 31-5/8 30 – 31-5/8 – – 31-5/8 31-5/8

(C) Discharge

Connections

2-1/2" ANSI

900 RF

2" ANSI

1500 RF

2-1/2" ANSI

900 RF

2-1/2" ANSI

900 RF

2" ANSI

1500 RF2-1/2" NPTF

2-1/2" ANSI

900 RF

2" API

5000–

2-1/2" ANSI

900 RF

2-1/2" ANSI

900 RF

(C) Suction

Connections

5" ANSI

150 RF

3" ANSI

150 RF

5" ANSI

150 RF

5" ANSI

150 RF

3" ANSI

150 RF 4" NPTF

5" ANSI

150 RF

3" ANSI

300RTJ –

5" ANSI

150 RF

5" ANSI

150 RF

DIMENSIONAL DATA TABLE



Series

C8

C7

SUCTION CONNECTION

C6

C5

C4

C3

C1

C2

DISCHARGE CONNECTION

SUCTION CONNECTIONB6

B5

CRADLE DRAIN

B7

OIL DRAIN

B4

B3

B1

B2 DISCHARGE CONNECTION

6-5/16

2-7/8 1-1/2

3

21-5/8

10-13/16

PUMP

7/8" DRILL

4 PLACES27-13/16

CRANKSHAFT

2-7/16

A4

A5

7

A3

A2

A1

OIL PRESSURE GAUGE

LUBE OIL FILTER

OIL PRESSURE

SET VALVE

DIMENSIONAL DRAWINGS

Cast Fluid End

Block Fluid End



INSTALLATION, OPERATION,

LUBRICATION, MAINTENANCE AND

STORAGE INSTRUCTIONS

SAFETY

Electrical power or engine must be shut o completely

beore attempting service on the pump or its drive. Air

surrounding the unit to be ree o toxic, fammable, or

explosive gases.

Tools needed should be planned or in advance (see

valve seat pulling instructions), and should be clean

and o adequate size. A torque-wrench will be required

to tighten connecting rod cap screws.

A properly sized and set relie valve installed in the

pump discharge system (ahead o any block valves) is

necessary to protect personnel and to avoid dangerous

overpressure. The relie valve set pressure shouldbe not more than 25% above the design operating

pressure and should discharge to tank or to the

atmosphere (toward the ground), and must not be

directed back to the pump suction system.

WARNING: Improper use of this equipment could result

in loss of life.

STORAGE

Pumps are shipped dry rom the actory. I a pump has

been in storage in a humid environment or more than

6 months the crankcase cover should be removed andcareully examined or rust or water collected in the

power end. Flush out any evidence o rust or damage

that exists, using a light clean oil.

Pumps to be placed in extended storage should be

cleaned, repaired as needed, and completely lled to

the top with clean oil to prevent rusting. Rotate pump

monthly 4-1/2 resolutions. Plug all openings to prevent

air entry and oil leakage.

Fluid ends must be completely drained o water and

suction and discharge ports blanked o. Store pump in

a clean, dry location.

PUMP LOCATION AND PIPING DESIGN

Locate pump and driver in a clean, well drained,

ventilated, and brightly illuminated area, with adequate

working spaces around the pump to provide ample

access to fuid end, power end, and associated drive

elements. Do not expect good maintenance to result i

the pump is positioned on muddy terrain, or in a dirty,

cramped, dimly lighted area!

The supply tank(s) should be large to allow dissolved

air and other gases to escape rom the liquid and allow

suspended solids to settle out beore entering pump.

A system employing dams and settling chambers

is desirable.

CAUTION: All pumps should be installed level. For

mobile applications the maximum angle o intermittent

operation pumps (SC pumps) should be no more than

5 degrees in any one direction.

Pumps are not designed to withstand piping weight,vibration, and the eects o thermal piping expansion/

contraction. Piping loads may be considerable and the

weight o all valving, dampeners, lters, and associated

orces, moments, and couples must be completely

isolated. Use fexible hoses and rigid piping supports to

isolate the pump and its driver rom these eects.

SUCTION PIPING

No part o the piping system deserves more careul

planning than the suction piping system. Suction

piping must be SHORT, DIRECT, and OVERSIZE. Use

one pipe size larger than the pump suction connection.

The shorter it is, the better! 1 to 3 eet per second

suction velocity is acceptable.

Reerence the ollowing table to size a direct suction

line rom a tank to a pump.

Suction Piping

3" – 4" 4" – 5" 5" – 6" 6" – 8"

MA-95M SC-170 MA-95L SC-170DD

MA-120M MA-120L

SC-170H MA-120L-HD

SC-170L

RO-174

RO-185

Use no elbows, tees, or restricted port valves in

this line. Do not install orice plates or positive

displacement type fuid meters in the suction line

which act as fow restrictors. Avoid the use o suction

lters, i possible. Consider ltering the liquid as

it enters the supply tank rather than as it leaves

it. The use o an eccentric reducer with the fat

side up located at the pump suction connection is

recommended. The suction line should slightly rise

rom tank to pump and loops in which air may collect

must be avoided.

The absolute pressure in a suction line may be less

than atmospheric pressure and air may be “sucked”

into the line unless all fanges and connections are

airtight and watertight. I you can see water leaking out

o a suction line when the pump is still, that may mean

air is being sucked in when the pump is running.

Suction piping should be buried beneath the rost

line, or insulated to avoid reezing in the winter. I the

suction line has a block valve at the supply tank, a

suitable relie valve is suggested to relieve the suction



Series

piping rom any possible dangerous overpressure rom

the discharge piping system.

Suction piping is oten large, heavy (especially when

lled with liquid), and tends to vibrate. Proper solid

supports are recommended. A suction hose located

near the pump will isolate these eects, protecting

the pump rom the orces and moments that piping

weight creates.

New suction piping systems should be fushed ree

o pipe scale, welding slag, and dirt beore starting

the pump. Hydrostatic testing to detect air leaks is

advisable. Proper choice o suction hose construction is

essential to avoid collapse o the hose liner.

Install a dry type compound gauge in the suction

line near the pumps which should fuctuate evenly. I

violently pulsating, this gauge indicates that the

pump is not ully primed, or that one or more valves

are inoperative.

ACCELERATION HEAD A characteristic o all reciprocating pumps is the

imperative need to consider the eects o acceleration

head which is a SYSTEM-related phenomenon.

Acceleration head may be considered to be the loss o

available hydraulic head (energy) in the piping system

occurring because the demand by the pump cylinders

or liquid is not smooth and even. Because the pump’s

demand or liquid is cyclical, the velocity o the liquid

in the entire suction system is not truly constant but

varies in response to the combined demand o the

reciprocating plungers. Thus, liquid in the suction

system is compelled to be accelerated and deceleratedseveral times during each crankshat revolution,

depending on the number o plungers. Called

“acceleration” head, this loss o available hydraulic

head is proportional to:

(a) The speed (RPM) o the crankshat

(b) The average liquid velocity in the piping

(c) The length o the suction piping

(d) The number o pumping chambers (triplex, etc.)

(e) The compressibility o the liquid

Thus, or a given pump, acceleration head eects maybe reduced by the use o the shortest possible suction

line, sized to reduce liquid velocity to a very low speed.

This is oten more economical than the use o charge

pumps or expensive suction stabilizers.

NOTE: Charge pumps should be sized to 150% o rated

pump volume. Charge pumps need to be centriugals,

not a positive displacement pump.

A charging pump is usually not a good substitute or a

short, direct, oversize suction line, nor is it a substitute

or the computation o available NPSH, acceleration

head, riction head, vapor pressure and submergence

eects duly considered. Required NPSHR o Aurora

Pump, Aplex Series pumps depends on speed,

choice o plunger size and valve spring type. Consult

Aurora Pump, Aplex Series Engineering or help

with your particular application. A ull discussion o

suction system losses is given in the Standards o the

Hydraulic Institute, 14th Edition.

A common design mistake is the connecting o two

(or more) reciprocating pumps to a COMMON suction

header. This is a prooundly complicated suction

system, largely not amenable to mathematical analysis,

and is requently the cause o severe pump pounding,

vibration and early valve ailures. Each pump should

be ed by its own separate, individual piping system,

ree rom the eects o other pump cyclical demands

or liquid.

DISCHARGE PIPING

A properly designed discharge piping system usually

prevents the need o a pulsation dampener. The mostcommon mistakes made in the design o the discharge

piping system are:

1. Pumping directly into a tee or header. A

“standing” wave (either audible or subaudible)

then oten occurs. I fow must enter a header,

use a 45º branch lateral (or equivalent) to avoid a

refecting surace rom which sound can refect.

2. Pumping into short radius 90º elbows. Instead,

use two 45º elbows spaced 10 or more pipe

diameters apart.

3. Pumping into a right angle choke valve.

4. Pumping into too small piping line size. Piping

should be sized to keep fuid velocity below 15

eet per second, max.

5. Pumping through an orice plate, small venturi,

or reduced port “regular opening” valve.

6. Pumping through a quick closing valve, which can

cause hydraulic shock (water-hammer).

A good discharge piping system includes:

1. A properly sized, correctly set relie valve.

Discharge rom relie valve returned to tank (not

to pump suction).2. A ull opening discharge gate or ball valve. Avoid

restricting plug valves, globe valves and angle

valves.

3. A pressure gauge with gauge dampener or

snubber. Consider a liquid lled gauge. (Scale

range to be double the normal pump operating

pressure.)

Locate the relie valve and pressure gauge ahead o

any block valve and so that the pressure in the pump

is always refected at the relie valve. The relieving



capacity o the relie valve must exceed the capacity o

the pump to avoid excessive pressure while relieving.

Use a ull size relie line.

To minimize vibration (whether hydraulic or

mechanical), discharge lines should be kept short,

direct, well supported and solidly anchored. Avoid

“dead” ends and abrupt direction changes.

BYPASS PIPING

Some designers ignore this important aspect o proper

design o pump piping systems.

A reciprocating pump, especially ater maintenance o

the valves or plungers, STARTS WITH ONE OR MORE

FLUID CHAMBERS FULL OF AIR. Pumps operating on

propane, butane, or other volatile liquids START WITH

VAPOR IN THE FLUID CHAMBER(S).

Positive displacement pumps do not automatically

purge themselves o air and gas ater shutdown.

For example, a quintuplex plunger pump will, aterservicing, expel the air in our o the ve pump

chambers. Thus, the pressure rom our o the “active”

cylinders will keep shut the discharge valve o the

“inactive”, or “air bound,” cylinder. Then, the air or

gas in this cylinder will be compressed and expanded

by its reciprocating plunger and never leave the

chamber. Similar eects occur in duplex and

triplex pumps.

To overcome these diculties, adequate provision or

expelling the gas in the “air bound” cylinders must

be present. Common practice is to totally relieve the

pump o all discharge pressure during the start-up,

ater servicing.

Consider the operational advantage o a ull-sized

bypass line (return to tank) which substantially removes

discharge pressure rom all cylinders during the start.

This requires a block valve on the discharge side and a

ull opening bypass valve on the other side.

For economy, the bypass (to tank) can be combined

with the relie valve discharge line. This line must be

ull-sized, well supported, and sloped downward to

avoid reezing in cold weather. (A rozen relie valve

line provides NO protection to either the pump or

operating personnel!)

The ability o a reciprocating pump to be “sel-priming”

depends on the ratio o the swept (displaced) volume in

the cylinder to the unswept (clearance) volume at the

end o the stroke. This depends on the design o the

fuid end and on the plunger size selected.

Choice o the largest size plunger or a particular

fuid end improves this compression ratio and so

leads to “sel priming”, or easy priming. Choice

o the minimum size plunger sometimes leads to

diculties, especially with pumps that require requent

servicing, or which handle volatile liquids, or which

contain substantial amounts o dissolved air or gas.

An automatic bypass and purging system or these

applications may be merited.

LUBRICATION

Aurora Pump, Aplex Series pumps use S.A.E. 40 wt.

nondetergent oil in the crankcase. This oil requires

only a nonoaming additive and should possess good

water separation (antiemulsion) characteristics. Such

oils are oten labeled “industrial” or “turbine” quality

lubricants. I these oils are not available, a good

quality gear oil or EP oil may be substituted. See

lubrication guidelines.

In temperate climates, oil viscosity selected should

all between 70 and 84 seconds Saybolt viscosimeter

at 210º F. In arctic service, low pour point oils

are needed.

Ater the rst 500 hours o operation in a new pump,

drain the oil. Rell with clean, resh oil. Thereater,

change the oil every 1,500 hours or sooner i it

becomes contaminated with water or dirt. Fill to the

center o the sight gauge. Recheck ater starting,

adding oil to center o gauge while running.

The table below shows the quarts o oil needed or

each pump.

Quarts o Oil

15 18

MA-95L MA-95M

MA-120L MA-120M

MA-120L-HD SC-170

SC-170L SC-170H

RO-174 SC-170DD

RO-185

V-BELT DRIVE

A properly designed, well-aligned V-belt will provide

years o reliable, economical service i properly

tensioned and kept dry, ree o oil and ventilated.

Alignment is critical or long lie. I the shat axes

are not truly parallel, or i the sheave grooves are not

positioned in good alignment, some belts will carry

most o the load, resulting in their disproportionate

load share and may actually twist or turn over in the

groove. Use a straight edge across the rim o the

sheaves to detect and correct or misalignment.

Ater about one week o operation, new V-belts will

have stretched somewhat. The motor must be moved

on its slide base to re-establish proper belt tensioning.

Insucient tension results in slippage, burning,

squealing (especially during starting) and shortened

belt lie. Overtightening imposes excessive loads on

pump and motor bearings and can cause early shat

atigue ailure.



Use the ollowing table in adjusting V-belt tension:

Belt Tension at Mid-Span

Cross-Section New Belts Used Belts

“B” 5 – 6 lbs. 3-1/4 – 5 lbs.

“C” 9-3/4 – 13 lbs. 6-1/2 – 9-3/4 lbs.

“3V” 4 – 10 lbs. 3 – 7-1/2 lbs.

“5V” 17 – 30 lbs. 13 – 23 lbs.

Applying the above orces with a small spring scale,adjust motor position to provide the ollowing defection

at mid-span:

Approx. Center Distance

(Span), inches

Deection,

inches

16 1/4

22 3/8

28 7/16

32 1/2

40 5/8

48 3/4

60 15/16

Belts must be matched in pitch length. I one ortwo belts are slack, when the others are correctly

tensioned, investigate or possible reasons. Correct

any misalignment or lack o matching so each belt will

transmit its load share.

Sheaves must be balanced to prevent abnormal

vibration. Balancing weights must NOT be removed.

Type “QD” sheaves must be evenly tightened on their

tapered hubs to avoid rim wobble and severe lateral

vibration. V-belts that snap and jerk will produce

abnormal vibration and loads on both pump and motor

or engine.

Run the pump several minutes at ull load with belt

guard removed, observing or uneven motion on the

belt slack side, especially.

When an old V-belt drive becomes unserviceable,

replace ALL belts, not just the broken or cracked belts.

Do not operate belts on sheaves having worn, rusted,

greasy or broken grooves. Shut o power to driver

beore servicing drive or pump.

WARNING: Do not operate without appropriate guards

in place.

DIRECTION OF ROTATION

Beore placing pump in operation, check that

crankshat rotation agrees with the arrows cast on top

o the power rame by briefy jogging the electric motor.

Crankshat rotation must be clockwise as viewed rom

the right side o pump.

I pump is gear driven, remember that the pinion

shat turns opposite the crankshat, i using a single-

reduction geared drive or in the same direction as the

crankshat when using a planetary gear.

AUTOMATIC (SAFETY) SHUTDOWNS

Careully check all electric shutdown devices present,

such as crankcase oil level, discharge pressure,

vibration, lubricator oil level, motor thermostat, etc.

CRANKSHAFT ASSEMBLY

GENERAL

Aurora Pump, Aplex Series crankshat suspension

uses two single-row tapered bearings, which are shim

adjusted to provide the correct running clearance.

Thorough cleaning o all components prior to assembly

is essential.

Power rame, shat, bearings and retainer MUST be

scrupulously scrubbed with clean solvent (such as

kerosene) beore starting. Remove any oil, dirt, rust and

oreign matter which might prevent the correct t up.

Crankshat journals are critical. Remove all burrs, rust

spots, and nicks, paying special attention to the ground

areas on which bearings and oil seals operate.

Connecting rods and crossheads may be installed either

beore or ater installing the shat in MA-120M pumps.

TAPERED ROLLER BEARINGS

Shat and rame tolerances provide a tight (shrink) t

on the shat and in the carrier. The best way to install

the cone assembly (consists o the inner race, cage

and rollers) on the shat is to heat the cone assembly

in an electric oven or 30 minutes at 300 to 400ºF. No

more! (DO NOT heat bearings with an acetylene torch.

This ruins the bearings!) Using clean, insulated gloves,

C.D.



Series

remove the hot cone assembly rom the oven, promptly

dropping it on to the shat.

The cone assembly MUST contact the seat thrust ace

(not be cocked), and the large end o the rollers MUST

be down. Do not hammer on the bearing. The sot steel

cage is easily distorted, ruining its unction as a roller

separator and guide against skewing. I the cone does

not contact its thrust ace properly, it must be pressed

into place using a specially machined sleeve (which

does not touch the sot steel cage). A hydraulic press is

recommended i this diculty arises.

CUP INSTALLATION

Tapered roller bearing cup (outer races) is a press-t in

the bearing carrier, using a hydraulic press. Cup must

be pressed into a clean carrier until the race solidly

abuts its shoulder (must not be cocked).

The tool or plate used or this must contact only the

outer end ace–not on the taper.

INSTALLING CRANKSHAFT

SHIM ADJUSTMENT OF TAPERED

ROLLER BEARINGS

To provide or crankshat thermal

expansion, sucient shims must be

installed to provide .005" to .015"

lateral end play, when shat is cold.

Shims must be placed only under thedrive side bearing carrier. The lube oil

housing has a gasket under it.

A eeler gauge and a 1" micrometer

caliper are required. Install a trail shim

set on one side o the pump. Tighten the

fange bolts on this side only.

CAUTION: Lubricate the frame bores

and the O-ring seals located in each

carrier to prevent damage during entry.

Oil the bearings.

Draw up the carrier, evenly tightening its cap screws.

Rotate the crankshat slowly by hand, seating all rollersinto running position.

Measure the gap existing between the rame ace and

carrier fange. The correct thickness o the shim set to

be installed equals the measure gap plus about .010".

(No pre-load.)

Ater installing above shim set, a dial indicator may be

used against the end o the shat to conrm the shim

selection. Bump the shat in one direction and zero

the dial indicator. Bump the shat the opposite way. I

shimming is correct, the shat will move laterally rom

.005" to .010".

The recommended tightening torque or bearing

retainer 5/8"-11UNC cap screws is 118 to 145 t. lb.

INSTALLATION OF CRANKSHAFT OIL SEAL

Insert oil seal over the end o crankshat and position

it into the oil seal bore in the bearing carrier. Using a

rubber mallet, tap it into the bore until the ace o the

seal is fush with the bearing carrier.

LUBE OIL PUMP ASSEMBLY

Lube oil pump and lter assemblies are employed

in certain Aurora Pump, Aplex Series pumps. This

assembly is installed ater the shat and its tapered

bearings have been correctly set. Providing ltered

oil under pressure (35 to 75 psi) to all crosshead pin

bushings and crankpin bearings, this special gear

pump is driven by a bloted-on drive shat. Driver ismade with a emale drive square which drives the male

square end o the lube oil pump shat.

The driver shat is piloted by the main bearing inner

race cone and is secured to the crankshat by our

socket head cap screws. Stake their heads using a

center punch to upset the adjoining metal.

The lube oil pump (Tuthill) is a gear type pump

possessing a sel-reversing sector which automatically

switches suction and discharge connections in the

event (not recommended) that the pump is caused to

SETTING TOOL

BEARING CUP

CARRIERO-RING

GROOVE

SOLID CONTACT

HERE

CRANKSHPRESSURE ADJUSTING

RELIEF VALVE

OIL PRESSURE

GAUGE

BEARING

CARRIER

TUTHILL LUBE

OIL PUMP

OIL PUMP

DRIVE SHAFT

OIL FILTER



rotate opposite the correct direction. The lube

oil pump is readily removed or inspection, repair, or

replacement without disturbing any other

pump component.

The lube oil pump shat is journaled in a bronze

bushing tted into the bearing carrier. I this bushing

becomes worn (check or contaminated crankcase oil),

it must be promptly replaced. A worn bronze bushing

will cause this pump to requently lose its prime, and

also may cause excessive wear in the pump rotor teeth.

DISASSEMBLY

Ater removing the connecting rod cap and cap bolts

(note identiying marks on each cap so each may be

later correctly reassembled onto its own rod) remove

a bearing carrier rom the rame. Two jack out tapped

holes are provided in the fange o the carrier or this

purpose. Support the shat during removal to

avoid damage.

The crankshat may now be extracted, once all

connecting rods are moved clear. Examine the crankpin

suraces or wear or corrosive pitting. The correct

diameters o these journals are:

Crankpin Diameter ............................4.0000/3.9990"

I worn more than .010" undersize, crankshat should

be replaced, or an attempt to salvage it may be made

at a shop well equipped to grind the crankpins which

must be ully round, chrome plated, and nish ground

to the above sizes. (Aurora Pump, Aplex Series does

not perorm this unction.)

Crankshat tapered roller bearings should be careullyexamined or pitting, scoring or corrosion, and replaced

as required. The cone and roller assembly is most

easily removed by rst cutting away the cage using

an acetylene cutting torch. Then heat the cone (inner

race) with the shat held vertically so cone will drop

o due to its own weight. Avoid excessive heat on the

crankshat which tends to distort its geometry.

Cups (outer races) o tapered roller bearings may be

extracted rom bearing carrier using a conventional

bearing puller tool o the automotive type (widely

available). Do not attempt to use heat on a bearing

carrier as this will result in severe distortion (out-o-

round). Replace the bearing carrier i broken or

out-o-round.

CONNECTING ROD, CROSSHEAD,

EXTENSION ROD, CROSSHEAD PIN

AND WIPER BOX ASSEMBLY/

DISASSEMBLY:

GENERAL

Aurora Pump, Aplex Series connecting rod assemblies

employ precision automotive type steel backed,

babbitt-lined crankpin bearing halves which requireno shims or clearance adjustment. This pump

employs ull circle (piston type) crossheads and

hardened stainless steel extension rods, which are

eld replaceable.

Extension rods are provided with wrenching fats

to permit tightening o the tapered thread into the

crosshead, establishing accurate alignment while

aording easy eld installation.

Beore beginning the assembly all parts must be

scrupulously cleaned, removing all oil, dirt, rust, and

oreign matter which prevent proper tting, or which

might tend to score the rubbing suraces. Cleanand examine the power rame bores or scoring and

abnormal wear, especially wear o the lower crosshead

guide way. Hone smooth, i rough.

Measure the bores o the rame using inside

micrometers to determine abnormal rame wear i any.

Crosshead O.D.: 5.742/5.740

New Frame Bores: 5.749/5.742

Frame bores that have become worn more than .015"

must be sleeved with a cast iron liner to re-establish

correct geometry and alignment. Contact Aurora Pump,

Aplex Series concerning the repair o badly worn

rame bores.

Smooth any rough corners and edges on the crosshead

skirts, using ne emery cloth. Examine and clean the

emale tapered threads and wrist pin holes.

CRANKPIN BEARINGHALF

CRANKPINOIL HOLE CROSSHEAD

WRENCH FLATS

CAP

CAP BOLTCONNECTINGROD

WRIST PINBUSHING

WRIST PINWIPER BOX

EXTENSION ROD



Series

INSTALLING WRIST PIN BUSHINGS

The wrist pin bushing is precision machined

bearing bronze which is press tted into the eye o

the connecting rod.

Bushing O.D.: 2.256/2.255

Connecting Rod Eye: 2.251/2.254

Careully align the bushing with its hole, and ater

applying oil to bushing O.D. use a hydraulic press

to orce it home. When a bronze bushing is pressed

into place, the I.D. (bore) o the bushing is reducedsomewhat, owing to the extent o press t. Thereore,

a clean, new wrist pin should be inserted into the

bushing bore to establish that running clearance has

been obtained. The running clearance between the

wrist pin and installed bushing is:

New Pin O.D.: 2.0238/2.0233

Installed Bushing Bore: 2.0251/2.0261

Oil Clearance ........................................0013/.0028"

Replacement bushings are urnished prebored by

Aurora Pump, Aplex Series which usually eliminates

the need to ream the installed bushing bore. However,due to slight variations in nishes and tolerances

it sometimes happens that more than predicted

contraction o the I.D. occurs. This occurrence results

in a slight intererence which may be eliminated by

lightly honing the bore o the bronze. (NOT by reducing

the pin size!) An automotive engine repair shop usually

is equipped with power honing machines capable o

smoothly nishing the bushing bore. Bore o bushing

must be round and ree o taper.

PINNING THE

CROSSHEAD A presst is employed

between the crosshead

pin and crosshead

to secure the pin

against any motion.

A hydraulic press is

employed to orce the

pin through the bosses

o the crosshead.

A mishap during insertion can occur causing the

ruin o the pin or the crosshead, i during application

o pressure:

(a) Pin is not aligned absolutely square with

the crosshead.

(b) Crosshead is not supported on v-blocks so it can

roll while under load.

(c) Connecting rod is not ully supported so pincannot enter the bushing without damage to it.

This will damage the bushing.

(d) Failure to oil pin O.D. and crosshead bores, to

prevent galling. Use clean motor oil.

Ater installing the pin, careully check the crosshead

O.D. to see i it is out-o-round. I so, a smart blow with

a rubber mallet will restore the crosshead O.D. into its

original roundness.

ORDER OF ASSEM BLY

The connecting rod/crosshead assembly is installed

AFTER the assembly o the crankshat. In these

models, the rod and crosshead will pass through the

wiper box wall bore. With the rame in the horizontal

position, load the rods through the cradle.

PRECISION CRANK PIN (CRANKTHROW) BEARINGS

Aurora Pump, Aplex Series pump crankpin bearings

require no shimming to establish correct running

clearance. Precise machining o the connecting rod,

caps and crankpin journals is necessary to achieve

this convenience.New Crankpin O.D.: 4.000/3.999

New Connecting Rod Bore: 4.232/4.233

Crankpins that are worn

out-o-round, tapered,

or badly scored should

either be discarded or

perhaps salvaged by

grinding undersize,

hard chrome-plated,

and nish ground to

OIL HOLE

(TOP OF ROD)

RIFLE DRILLED

OIL HOLE

CONNECTING ROD

EYE BORE

WRIST PIN

BUSHING O.D.

WRIST PIN

CROSSHEAD

CONNECTING

ROD WITH

BUSHING

V-TYPE BLOCKS

CRANKSHAFT

INSTALLEDWIPER BOX

WALL

CRADLE

OPENING

CROSSHEAD

AND PINCONNECTING

ROD

POWER

FRAME



above diameter. (Aurora Pump, Aplex Series does not

oer this service.)

Connecting rod /cap bore must be perectly round and

within above sizes and ree o taper. Discard i elliptical

or tapered as the result o abnormal heating. Each cap

and rod is match-marked or correct identication.

Take care that each cap is reinstalled properly with its

companion rod. Bearing halves are identical and are

prevented rom rotating by tongues which t into slots

in the cap.

Check that all oil holes are clean and ully open. GRIT

is the greatest enemy o bearings, however precisely

manuactured. Hence, all suraces must be perectly

clean and lightly oiled prior to assembly. Remove any

burrs or sharp corners which prevent the perect tting

o these precision bearings. Using a torque wrench,

tighten cap bolts as ollows:

Thread Size: 1/2" – 13UNC

Tightening Torque: 60-75 Ft. Lb.

Specied torque, applied to clean, well oiled threadsand bearing aces, will create tensile stresses in the

cap bolts rom 90,000 to 110,000 psi, approx. and

will provide correct initial tension. Aurora Pump, Aplex

Series pumps use high strength cap bolts suitable or

these initial loadings, maintained by hardened spring

lockwashers. MA-120M use hardened lock washers and

other models use saety wire to maintain the required

tightness.

Ater all rods and caps are secured, slowly turn the

crankshat to be sure no bearing is in a bind.

Using a fashlight, examine the location o each

connecting rod (eye end) within its crosshead. Rodsmust not touch any crosshead boss or skirt.

OIL SCOOP

MA-120M also employ oil scoops which are cast

integrally with the power rame and are machined to

lightly contact the crankshat cheek. No adjustment

is required.

WIPER BOX ASSEMBLY

GENERAL

Extension rod wiper boxes (sometimes reerred to

as the diaphragm stung box, or stripper housing

assembly) serve two important unctions: retention o

crankcase oil in the power end and exclusion o dirtand water.

Aurora Pump, Aplex Series has developed a unique

sealing set which operates on a hardened and ground

stainless steel extension rod (oten called “pony”

rod), and a steel bafe disc aording protection

against leaking plunger packing. The seals require no

adjustment, only correct and careul assembly.

“POLY PAK” SEAL

This seal keeps oil rom leaking out o the power rame.

Developed by the Parker Seal Group, this patented rodseal employs a sot nitrile rubber O-ring to energize a

special hard polyurethane Molythane® shell by orcing

the inner lip against the rod and the outer lip against

the housing bore, as shown.

The Poly Pak seal is inserted into its counter bore with

its lips directed toward the oil in the crankcase. (Will

NOT work i installed backward!)

MECHANICAL OIL SEAL

The oil seal is to keep contamination out o the power

rame. With the box positioned in a hydraulic press,

install the backup seal against the Poly Pak seal, with

the lips o both seals acing downward.

The mechanical seal contains a garter spring. Check

to see that this spring is still properly located and in

its position. The mechanical seal has a metal case

which serves to orce the Poly Pak seal into its cavity,

energizing its lips. Apply oil lightly to the bore o the

box beore pressing each seal into its counterbore.

OIL SCOOP

LIGHT CONTACT

HERE

CROSSHEAD DECK

CRANKSHAFT

CHEEK

POWER FRAME

EXTENSION ROD

WIPER BOX

OUTER MECHANICAL SEAL

PLUNGERTO CRANKSHAFT

POLY PAK ROD SEAL

BAFFLE PLATE

PRESS

WIPER BOX

SUPPORT



Series

INSERTING THE PLUNGER

Insert the extension rod through the wiper seals with

the tapered thread and entering FIRST. Do not move

the extension rod through the seals with wrenchingfats entering rst. The sharp corners on the wrenching

fats may damage the seal lips, resulting in oil leakage.

With extension rod inserted through the wiper box

seals, thread the tapered threads (must be clean!) into

the tapered crosshead emale threads. Firmly tighten

and apply torque to the wrenching fats only. Never

damage the extension rod ground suraces!

Then asten the wiper box to the power rame by

tightening the cap screws. Oil leakage between rame

ace and wiper box is prevented by use o an O-ring.

STUFFING BOX, PACKING AND

PLUNGER ASSEMBLIES

GENERAL

Aurora Pump, Aplex Series pumps all eature eld

removable and replaceable stung boxes with plungers

separable rom the extension rods.

I desired, the boxes, plungers, and packing units may

be installed (or removed) as a unit assembly, permitting

service outside the pump. All boxes are retained byour (4) studs and nuts, and are centered in the rame

bore, ensuring correct alignment.

The plungers may also be removed separately (without

box removal) to acilitate repacking. With this option,

the necessary space required to remove plunger, it is

rst necessary to remove the extension rod.

SPRING LOADED PACKING

Note that the gland is screwed tightly onto the box

and contacts its ace. The spring is providing all o the

initial compression and adjustment. No adjustment is

provided by the gland.

Since the orce exerted by the spring is contingent on

the space provided or it, the correct lengths o all rings

is essential or good tensioning.

Spring:

A sti Inconel® spring, which closely ts the bore o

the stung box, is used in this assembly. This spring is

compressed in a vise to the operating length required

plus 0.25" and tied with waxed nylon spot tie cord. The

cord is looped over the ends o the spring through the

coils and tied to maintain the length mention above.

Each spring is assembled into the stung box. Note

that the spring does not contact the plunger.Spring-Guide Ring:

Plungers are heavy and the importance o a well-tted

guide ring that carries this weight is oten overlooked.

Discard any guide ring that becomes worn or scored, as

it will then not serve its purpose. It should t snugly in

the box. Apply oil generously to this ring.

Spring Loaded Packing:

Three (3) rings o chevron or compression packing are

installed next. For compression packing, install them

with the skive intersections 180º apart to discourage

leaking.Gland Ring:

This ring also ts the plunger and helps support the

plunger weight. Discard it i bore is worn, rough or out-

o-round. Lightly oil the ring beore insertion. The gland

ring ts all packing.

EXTENSION

ROD

WRENCHING

FLATS

WIPER

BOXTAPERED

THREADS

Compression Packing

Chevron Packing

SPRINGPACKING

SPACERS

GLAND RING

GLAND RING

SPRING GUIDE

SPRING GUIDE



J-STYLE STUFFING BOX & PLUNGER ASSEMBLY

(STYLES 838 & 858)

Above depicts Styles 838 and 858 packing correctly

installed with all packing lips acing TOWARD the fuid

pressure. Note that two (2) units o Styles 838 and

858 packing are positioned ahead o the lantern ring,

and one (1) unit is positioned behind it. Thus lubricant

entering the lantern ring is orced toward the pressure.

Throat Bushing:

Plungers are heavy and the importance o a well tted

throat bushing that carries this weight is oten over-

looked. Discard any throat bushing that becomes worn

or scored, as it will not then serve its purpose. It should

t snugly in the bottom o the box. Apply oil generously

to this ring.

Styles 838 and 858 Packing:

Styles 838 and 858 are a NON-adjustable type

packing which depends solely on hydraulic pressure to

energize the sealing lips. (Gland-tightening orces doNOT energize the lips.) Tightening and hydraulic end

thrust loads are transmitted entirely through the center

support portions o each ring.

The fattened portions o the rings are large enough

to withstand overtightening. Do NOT attempt to

adjust this type packing. It should be kept thoroughly

tightened at all times. (Running it loose will ultimately

ruin the bore o the box.)

Running it loose will NOT usually cause it to drip at all,

but it can ruin the box in time.

Lightly oil each ring and the box bore and then lightly

tap in each ring separately with the rings acingcorrectly. This is most easily done beore installing

the plunger.

Lantern rings are provided with O.D. and I.D. relies

and two (or more) oil holes to allow lubricant to reach

the plunger. Ater the last unit o Styles 838 and 858

packing is in place, generously oil the lips o all seal

rings to ease plunger entry.

INSERTING THE PLUNGER

Apply oil liberally to plunger O.D. and lightly tap it

through the packing.

A sot rubber mallet is recommended to avoid any

damage to the plunger ace or its threads. Remember:

The ragile nature o packing rings and plunger

suraces deserves your respect and avoidance o

careless damage to these key elements!

INSTALLING THE GLAND

Considerable downward pressure on the gland is

required to compress the spring, to move the packing

into location, and to start the threads o the box.

Once the gland threads are started, screw it down

completely until it makes up tightly against the ace o

the box, or spring loaded packing. For Hi/Lo, J-Style

or Gland adjusted packing, tighten the gland until it is

seated rmly against the packing.

GLAND

RING

THROAT BUSHING

LANTERN RING

PACKING SET

PRESSURE

BAFFLE

PRESSURE

BOTTOM ADAPTER

(HARD PHENOLIC)

SEAL RING

TOP ADAPTER

(HARD PHENOLIC)

GLAND RING

TAP HERE-USING

RUBBER MALLET

OILED PLUNGER

STUFFING BOX

BENCH TOP



Series

INSTALLING THE STUFFING BOX

Aurora Pump, Aplex Series

stung boxes derive their

alignment rom the bores

o the power rame and

the aces o the fuid end.

So these suraces MUST

be cleaned o rust, scale,and dirt beore assembly is

begun. Wash all contacting

suraces with clean solvent

and dry with a

CLEAN shop towel.

A nitrile rubber seal is used

to seal between the ace o

the fuid end (must be fat,

clean and smooth) and the

ace o the box. Replace i damaged.

All stung boxes are retained by our large studs and

nuts which extend through the power end, serving toclamp the box and the powerrame tightly against the

fuid end ace. These our stud nuts must be

EVENLY tightened.

Using a socket, socket extension, and torque wrench,

tighten clean, well-oiled threads and nut aces.

Stud Threads

1" – 8UN at

440–465 Ft. Lb.

1" – 8UN at

400–465 Ft. Lb.

SC-170 SC-170L

SC-170H MA-120L

RO-174 MA-120L-HD

RO-185MA-95M

MA-120M

CONNECTING THE PLUNGER

Install the metal bafe plate on the extension rod

and roll the pump slowly until the extension rod male

threads just touch the mating plunger emale threads.

Applying a pipe wrench to plunger knurled area,

thoroughly tighten the connection. Do NOT use a

“cheater” when connecting plunger to extension rod.

(Serves no useul purpose, and may damagethe connection!)

PACKING

Packing lie or aramid ber packing may be improved

in some applications by regular, systematic lubrication.

An optional orce eed lubricator assembly is oten

recommended especially or pumps on continuous

duty. This provides regular, controlled supply o

lubricant lowering riction and heat.

Additionally, the regular application o the correct

lubricant aids dissolving o salt and gyp tending

to build up on the plungers in produced water

applications. For this service, Rock Drill Lubricant is a

popular and eective packing lubricant.

Plungers in CO2, ethane, or other very cold liquid

services may use brake fuid. This fuid does not

congeal into a solid which cannot enter the packing.

Consider the use o an air-sealed cradle into which

dry (instrument) air may be directed, excluding the

moisture which causes plunger icing especially in very

humid conditions.

Packing lubricant or pumps on light hydrocarbons,

hot water, lean oil, naphtha, or gasoline oten requires

experimentation.

A good start is to use steam cylinder oil. Castor oil

is sometimes successul as a packing lubrication

or liquid propane and butane services, at ambient

temperature.

In pumps placed in arctic service, a special low pourpoint oil is indicated.

Packing lubrication is not permitted on some services,

such as amine, ood stus, etc., and other packing

styles and materials may be required.

PLUNGERS

Aurora Pump, Aplex Series oers its own unique

product: the Aurora Pump, Aplex Series Rokide®

plunger. This premier quality plunger consists o a

chromium-oxide deposition on a solid stainless

steel body.Ordinary handling will not damage this ne product.

Avoid striking the coated surace (black) during

installation. Apply light orces only on the ends o the

plunger. Do not hammer or pry.

All threads on Aurora Pump, Aplex Series plungers

must be CLEAN and oiled beore assembly. Stainless

steel (although very corrosion resistant) has a tendency

to gall and seize. To avoid this, an anti-seizing lubrican

is well worth its use. Apply oil to the threads and the

rubbing surace.

Aurora Pump, Aplex Series can supply solid ceramic

plungers on order. This plunger is very ragile,vulnerable to thermal and mechanical shock, and must

be handled with the greatest care. Use only a rubber

mallet to insert it into the packing. Other plunger types

are available upon request.

JACK SCREW HOLES

FOR BOX REMOVAL

1

2

3

4



DISC VALVE SYSTEMS AND

ABRASION RESISTANT

GENERAL

Aurora Pump, Aplex Series has developed a unique

setting/puller system permitting quick, easy and saemethods o installing and removing tapered seat valves.

The system allows servicing without distortion o the

seat, with minimum eort and NO damage to fuid end

tapers or seat.

Tapered seats notoriously drive solidly down into

mating deck tapers, so rmly that extraction heretoore

has always posed severe problems. Old style valves

may be pulled only with the greatest eort, using “J”

puller heads (prone to ailure), CO2 – dry ice, and other

improvisations.

DISC VALVE AND ABRASION RESISTANT VALVE CONSTRUCTION

The Aurora Pump, Aplex Series valve is a precisionmade subassembly using threads cut into the rim o

seat or use with Aurora Pump, Aplex Series setting/

pulling tool. These threads do NOT deteriorate as

proved by eld experience. By locating these on the

rim, setting/pulling orces are now applied only to the

rim o the seat, never to the webs (or “spokes”), or to

the center section. Distortion o the seat is eliminated.

Access to these seat threads is provided by the removal

o the valve cage on abrasion resistant valve or the

spring retainer on disc valves which is screwed onto the

seat. An anti-seizing lubricant applied to all threads is

good insurance against uture diculty.

SETTING THE VALVE SEAT

Eective pressure-sealing between tapered (male) seat

and tapered (emale) fuid end deck is possible ONLY

i the tapers are absolutely clean and dry just prior to

installation. Thoroughly clean suraces using a clean

solvent. Dry with a CLEAN shop towel.

Examine the cleaned fuid end deck tapers, using

a fashlight, and remove all deposits o gyp, salt, orother incrustation. Lightly emery cloth any minor

imperections ound in the deck taper.

The puller stem and puller head are provided with

tapered (locking) threads. Screw them together using

two pipe wrenches applied to the knurled areas

provided. Then screw the valve seat onto the puller

head by hand until it shoulders against the puller

shoulder. Do not tighten.

Lower the seat and puller assembly into the fuid end,

squarely setting the seat into the deck. Then pound the

top o the stem with a 6 pound hammer.

Unscrew the head and stem rom the seat using a 1/2"

bar (or screwdriver) into the hole provided at the top

end o the stem.

LOCK NUT

SPRING RETAINER

SPRING

VALVE DISC

VALVE STEM

PULLING THREADS

VALVE SEAT

VALVE SPRING

GUIDE CAGE

POLYURETHANE INSERT

VALVE BODY

VALVE SEAT

TYPICAL DISC VALVE

TYPICAL ABRASION RESISTANT VALVE

O-RING

INSERT 1/2" BAR TO

UNSCREW HEAD

FROM SEAT

PULLER STEM

PUMP FLUID END

PULLER HEAD

DISCHARGE

VALVE DECK

SUCTION VALVE

SEAT



Series

INSTALLING O-RINGS, ABRASION

RESISTANT SPRING AND CAGE

Install nitrile O-ring over the threaded

section o the seat and position it at

the bottom o the threads. Install the

polyurethane insert into the valve. The

insert may be heated in hot water to

make it fexible enough to stretch over

the valve. Position the valve into the

seat. Install the valve spring. Apply

anti-seizing lubricant to the threads o

the valve cage and screw the cage on

to the threaded valve seat with cage

setting tool.

INSTALLING DISC, SPRING,

DISC VALVES AND STEM:

Aurora Pump, Aplex Series oers discs o Delrin®

acetal resin, o 17-4PH S.S. hardened and ground, and

o titanium alloy.

Position the disc and Inconel® spring on the seat,

aligning the hole in the disc with the stem threads in

the seat center.

The stem, spring retainer, and locknut are shipped

rom Aurora Pump, Aplex Series already assembled and

tightened with a torque wrench with “Loc-Tite” sealant

added to the top stem threads only.

Stem Threads Tightening Torque

1/2"-13UNC 65-75 t. lb.

Use an anti-seizing lubricant in these threads. Thisis very necessary when seats and stems o Type 316

stainless steel are selected (optional) to prevent

galling. CLEANLINESS o threads and other contacting

suraces is o paramount importance in the assembly o

all valve elements.

VALVE SPRING OPTIONS

All Aurora Pump, Aplex Series valve springs are made

o Inconel® material, precisely designed and abricated.

Unless otherwise specied, the standard spring is

urnished. It provides excellent results in the greatmajority o applications.

Pumps employed in marginally available NPSH

conditions may require a “soter” spring, to reduce the

required NPSH. For these special conditions, Aurora

Pump, Aplex Series can supply “Light” valve springs

which exert lower pressure on the valve disc. The use

o “Light” valve springs may be limited by the choice

o plunger size and/or limited by the chosen speed o

the pump. “Light” valve springs may be impractical

or pump models tted with their maximum plunger

size, or which operate near top speed rating as disc

bouncing and erratic seating may occur. Contact Aurora

or more inormation.

VALVE DISC OPTIONS

Aurora Pump, Aplex Series acetal resin discs made

o DuPont Delrin® are machined fat and smooth to

produce perect sealing on the lapped-fat ace o the

seat. Used successully in thousands o applications,

these discs are light, slightly fexible under load, and

seal well, even at high pump speeds, providing smooth

pump action.

Acetal resins are very resistant to most corrodents, are

not usually suitable where fuid temperatures above

120 degrees are met. Nor do they aord long lie at

extreme pressures. Pressure limitations depend an

valve size. But continuous valve operation at pressures

above 2,500 psi usually indicates the need o metal

valve discs.

For higher temperatures or pressures, Aurora Pump,

Aplex Series oers lapped fat, hardened Type 17-4PH

stainless discs, or titanium alloy discs. These metal

discs are less tolerant o any ne grit in the liquid and

are noisier than the acetal resin disc.

PULLING THE VALVE SEAT

First drain the fuid end entirely. For abrasion resistant

valves, use the cage wrench to unscrew the cage rom

the seat. For disc valves unscrew the stem rom the

seat. Remove the cage, spring and valve rom the fuid

end. Attach the Aurora Pump, Aplex Series puller headto the puller stem, tighten their tapered threads with a

pipe wrench applied to the knurled areas o the puller

stem and head. Lower the stem and head into the fuid

end and engage the threads o the head onto the seat

threads.

Using a 1/2" bar (or screwdriver), rotate the head

clockwise and thread it ully onto the seat. But do

NOT tighten.

Slide the bridge over the stem. Clean and oil the stem

threads. Oil the ace o the wing nut. Thread wing nut

down onto the stem, seating it on the bridge top rmly.

Extract the seat rom the pump by striking the wingnut with a heavy hammer. A hydraulic ram may also be

used. Stand clear o the pump when applying heavy

tonnage, as the entire assembly will jump violently

upward when the pulling energy is suddenly released!

The Aurora Pump, Aplex Series puller/setting tool and

gauge tool are custom designed and built or each

specic Aurora Pump, Aplex Series pump model.

The same puller head is used on both suction and

discharge seats. The bridge is made to t each model,

and its proper use will not damage the valve cover



gasket machined counterbore on the top o the

fuid end.

SALVAGE OF WORN SEATS

Rough valve seat aces may oten be renewed by

lapping or grinding, i not deeply fuid-cut.

Perect fatness is required. A surace grind, ollowedby lapping on a lapping plate, provides excellent

smoothness and the fatness needed or good sealing

and smooth running. Metal valve discs may sometimes

be salvaged by grinding or lapping, i not deeply cut

or cracked.

Delrin® discs are relatively inexpensive and salvage is

seldom worthwhile. Replace the stem, i severely worn.

Inconel® valve springs rarely require replacement.

OTHER PUMP BRANDS

Aurora Pump, Aplex Series Industries can provide its

unique (patented) valve to t nearly all brands and

models o multiplex pumps. An Aurora Pump, Aplex

Series seat setting/puller tool is available too.

Trouble Possible Cause Remedy

Excessive heat in power end.

(Above 180ºF)

Pump operating backward. Correct rotation.

Insucient oil in power end. Fill to proper level.

Excessive oil in power end. Drain to proper level.

Incorrect oil viscosity. Fill with correct oil.

Overloading. Reduce load.

Tight main bearings. Correct clearance.

Drive misaligned. Realign.

Belts too tight. Reduce tension.

Discharge valve o a cylinder(s)

stuck open.

Fix valve(s).

Insucient cooling. Provide adequate cooling or oil or

reduce ambient temperature.

Pump speed too low. Increase speed.

TROUBLE LOCATION AND REMEDY



Series


Pump ails to deliver

required capacity.

Speed incorrect.

Belts slipping.

Change drive ratio or tighten

belts (i loose). Correct motor speed.

Air leaking into pump. Seal with compounds.

Liquid cylinder valves,seats or plungers worn. Reace or lap valves and seats;replace packing or plungers.

Insucient NPSHA. Increase suction pressure.

Pump not lling. Prime pump.

Makeup in suction tank less

than displacement o pump.

Increase makeup fow.

Reduce pump speed.

Vortex in supply tank. Increased liquid level in supply tank.

Install vortex breaker.

One or more cylinders not pumping. Prime all cylinders. Allow pump

to operate at low pressure through

bypass valve to eliminate vapor.

Suction lit too great. Decrease lit. Raise tank level.Broken valve springs. Replace.

Stuck oot valve. Clean.

Pump valve stuck open. Remove debris beneath valve.

Clogged suction strainer. Clean or remove.

Relie, bypass, pressure

valves leaking.

Repair.

Suction and/or discharge

piping vibrates or pounds.

Piping too small and/or too long. Increase size and decrease length.

Use booster pump. Use suction and/

or discharge pulsation dampeners.

Worn valves or seats. Replace or reace.

Piping inadequately supported. Improve support at proper locations.

Pump vibrates or pounds. Gas in liquid. Submerge return, supply or makeup

lines in suction supply tank.

I operating under a suction lit,

check joints or air leaks.

Pump valve stuck open. Remove debris beneath valve.

Pump not lling. Increase suction pressure.

One or more cylinders not pumping. Prime all cylinders. Allow pump

to operate a low pressure through

bypass valve to eliminate vapor.

Excessive pump speed. Reduce. Check drive ratio.Worn valves or seats. Replace or reace.

Broken valve spring. Replace.

Loose plunger. Tighten.

Loose or worn bearings. Adjust or replace.

Worn crossheads or guides. Replace.

Loose crosshead pin.

Loose connecting rod cap bolts.

Adjust or replace.

Pump running backward. Correct rotation.





Consistent knock. Water in power end, crankcase. Drain. Rell with clean oil.

Worn or noisy gear. Replace.

Worn or loose main bearing, crank pinbearing, wrist pin bushing, plunger,

valve seat, low oil level.

NOTE: High speed power pumps are

not quiet. Checking is necessary only

when the sound is erratic.

Adjust or replace.Add oil to proper level.

Packing ailure (excessive). Improper installation. Install per instructions.

Improper or inadequate lubrication. Lubricate per instructions.

Improper packing selection. Change to correct packing.

Scored plungers. Replace.

Worn or oversized stung box

bushings.

Repair or replace. Check bore

and outside diameter o bushingsrequently. (Many times plungers are

replaced and bushings ignored.)

Plunger misalignment. Realign. Plungers must operate

concentrically in stung box.

Wear o liquid end parts. Abrasive or corrosive action o liquid. Check valves and seats requently

at start-up to determine schedule

or replacing, etc. Eliminate sand,

abrasive, air entering pump.

Incorrect material. Install correct materials.

Liquid end cylinder ailure. Air entering suction system. Eliminate air.

NOTE: Pitting oten leads to hairlinecracks which ends in cylinder ailure.

Wear o power end parts (excessive). Poor lubrication. Replace oil as recommended in

instructions. Keep oil clean

and at correct temperature.

Be sure oil is reaching all bearings.

Overloading. Modiy pump or system

to eliminate overload.

Liquid in power end. Drain power end. Eliminate

cause or source o liquid entering

power end. Relubricate.




Series

Power Frame Assembly; Connecting Rod, Crosshead & Wiper Box Assembly

SC-170DDItem Quantity Description Part Number

1 1 Power Frame 7204-0305-00K

2 1 Crankcase Cover 7204-0304-00C

3 14 3/8"NC Hex Head Cap Screw x 3/4" Long 100-038034-273

4 1 Gasket, Crankcase Cover 7502-1035-00B

5 1 1/2" Pipe Plug, Hex Head 170-012002-237

6 1 Dipstick 7204-1139-00A

7 1 1/4" Pipe Nipple, Std. Wt. – 2" Long 157-014200-235

8 1 1/2" Pipe Plug, Socket Head 170-012003-237

9 1 Breather, Crankcase, 1-1/4" NPTM 7602-3001-00A

10

11

12

13

14

3

1

2

2

2

Connecting Rod subassembly, which includes:

Wrist Pin Bushing

Connecting Rod Bolts

1/2" Lockwashers, Spring Medium

1/8" Pipe Plugs, Sq. Head (not shown)

7204-0311-00D

7204-0310-00B

7204-0312-00A

154-012087-244

154-012087-244

SC-170DDItem Quantity Description Part Number

15 3 Crankpin Bearing Pair, w/Oil Groove 7204-0073-10K

16 3 Wrist Pin 7204-0005-00A

17 3 3/8"NC Socket Hd. Set Screw, Nylok – 1/2" Long 119-038012-999

18 3 Crosshead 7204-0309-00C

19 3 Extension Rod 7204-0065-10B

20 3 Wiper Box 7204-1352-00C

21 6 5/8" Hex Head Cap Screw x 1-1/2" long 100-058112-273

22 3 Seal, Wiper Box 145-200236-503

23 3 Seal, Wiper Box 145-200212-503

24 3 O-Ring, Nitrile Rubber 001500421

11

13 15

16

12

18

20

1

21

23

19

22

10

2

3

4

56

78

9

24

17

14

11

13 15

16

12

18

20

1

17

21

23

19

2

3

4

56

7

10

8

9

2223

14

14

Power Frame Assembly; Connecting Rod, Crosshead & Wiper Box Assembly

MA-95L, MA-95M, MA-120L, MA-120L-HD, MA-120M,

SC-170L, SC-170, SC-170H, RO-185Item Quantity Description Part Number

1 1 Power Frame 7204-0305-00K

2 1 Crankcase Cover 7204-0304-00C

3 14 3/8"NC Hex Head Cap Screw x 3/4" Long 100-038034-273

4 1 Gasket, Crankcase Cover 7502-1035-00B

5 1 1/2" Pipe Plug, Hex Head 170-012002-237

6 1 Oil Level Sight Gage 7602-3000-00A

7 1 1/4" Pipe Nipple, Std. Wt. – 2" Long 157-014200-235

8 1 1/2" Pipe Plug, Socket Head 170-012003-237

9 1 Breather, Crankcase, 1-1/4" NPTM 7602-3001-00A

10

11

12

13

14

3

3

6

6

6

Connecting Rod subassembly, which includes:

Wrist Pin Bushing

Connecting Rod Bolts

1/2" Lockwashers, Spring Medium

1/8" Pipe Plugs, Sq. Head

7204-0311-00D

7204-0310-01B

7204-0312-00A

154-012087-244

170-018003-405

MA-95L, MA-95M, MA-120L, MA-120L-HD, MA-120M,

SC-170L, SC-170, SC-170H, RO-185Item Quantity Description Part Number

15 3 Crankpin Bearing Pair, w/Oil Groove 7204-0073-10K

16 3 Wrist Pin 7204-0005-00A

17 3 3/8"NC Socket Hd. Set Screw, Nylok – 1/2" Long 119-038034-999

18 3 Crosshead 7204-0309-00C

19 3 Extension Rod 7204-0065-10B

20 3 Wiper Box 7204-0306-00C

21 6 5/8" Hex Head Cap Screw x 1-1/2" Long 100-058112-273

22 3 Poly Pak Ring 2" ID. x 2-3/4" OD. 145-200234-999

23 3 Oil Seal 145-200300-999




4 1

5

6

7

8

2

3

10

9

11

12

15

16

17

13

14

Crankshat Assembly 4" Stroke; Right-Hand and Let-Hand Drive; Right-Hand Shown

MA-95L, MA-95MItem Quantity Description Part Number

1

2

1

1

Crankshat Assembly (includes items 1 & 2)

Crankshat

Drive Key

PE103K

7204-0019-40D

146-078634-236

34

22

Crankshat Kit (includes items 1, 2, 3, & 4)

Bearing Cone, Tapered RollerBearing Cup

PE103KB

203-168000-999202-458000-999

5 1 Bearing Carrier, Drive Side 7204-0018-00C

6 2 O-Ring, Nitrile Rubber 110-000271-201

7 12 5/8"NC Hex Head Cap Screw 1-3/4" Long 100-058134-273

8 12 5/8" Lockwasher, Spring Medium 154-058108-244

9 2 Shim Set 7502-0293-00A

MA-95L, MA-95MItem Quantity Description Part Number

10 1 Oil Seal, Drive Side 145-393538-999

11 2 Frame Plug 7204-0315-00A


13 1 Bearing Carrier, Packing Lubricator Side 7204-0017-10B

14 1 Oil Seal, Packing Lubricator Side 145-200300-999

15 *1 Cover, Stub Shat 7204-0099-00A

16 2 1/2"NC x 3" Long Hex Hd. Cap Screw 100-012300-273


Crankshat Assembly 4-1/4" Stroke; Right-Hand

4 1

5

6

7

8

2

3

10

9

1920

26

17

16

23

2112

25

14

22

24

18

15

11

13

MA-120L, MA-120M, RO-185Item Quantity Description Part Number

1

2

1

1


Crankshat

Drive Key

PE102K

7204-0313-00D

146-078634-236

3

4

2

2


Bearing Cone, Tapered Roller

Bearing Cup

PE102KB

203-168000-999

202-458000-999

5 1 Bearing Carrier, Drive Side 7204-0018-00C




9 2 Shim Set 7502-0293-00A


11 1 Bearing Carrier, Lube Oil Pump Side Assembly

(*Includes item 15, below)

7204-0324-00E

12 1 Gasket 7204-0323-00A

MA-120L, MA-120M, RO-185Item Quantity Description Part Number

13 1 Bearing Retainer & Lube Oil Pump Driver Assembly 7204-0322-01B

14 4 1/2"NC x 1" Lg. Socket Hd. Cap Screw, Nylok 272-012100-999

15 * Pump Shat Bushing – One per item 11 7204-0320-00A

16 1 Switchgauge, Murphy 7509-0008-00A

17 1 Lube Oil Pump 7204-0325-00K

18 1 3/8" x 1/8" Hex Pipe Bushing, Hex, Iron 161-038018-451

19 1 1" x 15" Oil Filter 7602-3005-00A

20 1 1-1/4" Oil Filter Plug 7204-0314-00A

21 1 Frame Plug, Drive Side 7204-0315-00A

22 8 5/16"NC x 5/8" Lg. Hex Hd. Cap Screw 100-516078-273


24 2 3/8" Pipe Plug, Socket Hd. 170-038003-237


26 1 Check Valve, Brass 7509-0012-00A

* Items 16 through 18 are required only i packing lubricator is not ordered.



Series

Crankshat Assembly 4-1/4" Stroke; Right-Hand and Let-Hand Drive

4 1

5

6

7

8

2

3

10

9

20

26

17

16

23

2112

25

14

22

24

18

15

11

13

19

MA-120L-HD, SC-170L, SC-170, SC-170HItem Quantity Description Part Number

1

2

1

1


Crankshat Forged and Nitrided

Drive Key

PE301K

7204-0957-00D

146-078634-236

3

4

2

2


Bearing Cone, Tapered Roller

Bearing Cup

PE301KB

203-168000-999

202-458000-999

5 1 Bearing Carrier, Drive Side 7204-0018-00C6 2 O-Ring, Nitrile Rubber 110-000271-201



9 2 Shim Set 7502-0293-00A



(* Includes item 15, below)

7204-0324-00E

12 1 Gasket 7204-0323-00A

MA-120L-HD, SC-170L, SC-170, SC-170HItem Quantity Description Part Number



15 * Pump Shat Bushing – One per item 11 7204-0320-00A


17 1 Lube Oil Pump 7204-0325-00K


19 1 1" x 15" Oil Filter 7602-3005-00A

20 1 1-1/4" Oil Filter Plug 7204-0314-00A


22 8 5/16"NC x 5/8" Lg. Hex Hd. Cap Screw 100-516058-273





293010

22201812

1925

24

11

1321

14

16 17

15 7

89

23 13 4

6 5

26

28

272

31

Crankshat Assembly 4-1/4" Stroke Auburn Gear #8; Right-Hand Drive

SC-170L, SC-170, SC-170HItem Quantity Description Part Number

1

2

27

1

1

1

Crankshat Assembly (includes items 1 & 2 & 27)

Crankshat

Spline Adapter

Snap Ring

PE315K

7204-1164-00A

7204-1163-00A

226-000237-999

3

4

2

2

Crankshat Kit (includes items 1, 2, 27, 3, & 4)Bearing Cone, Tapered Roller

Bearing Cup

PE315KB203-168000-999

202-458000-999

5 1 Bearing Carrier, Gear Adapter 7204-1087-00B




9 2 Shim Set 7502-0293-00A



(* Includes item 15 below)

7204-0324-00E

12 1 Gasket 7204-0323-00A




SC-170L, SC-170, SC-170HItem Quantity Description Part Number

16 1 Lube Oil Pump 7204-0325-00K


18 1 1" x 15" Oil Filter 7602-3005-00A

19 1 1-1/4" Oil Filter Plug 7204-0314-00A

20 1 Frame Plug, Drive Side 7204-0315-00A21 8 5/16"NC x 7/8" Lg. Hex Hd. Cap Screw 100-516078-273





26

27

1

1

Breather, Filter

( listed above with crankshat assembly )

7602-3002-10A

28 6 5/8" Socket Head Cap Screw x 2-1/2" Long 105-058212-454


30 12 3/8" Washer “Stat-O-Seal” 156-038068-999

31 1 Auburn Gear #8 RTF



Crankshat Assembly 4-1/4" Stroke Auburn Gear #8; Let-Hand Drive

2113

11 14

24

2519

1218

1617

157

89

23134

6

5

2628

27

231

2930 10

22 20

SC-170L, SC-170, SC-170H, SC-170DDItem Quantity Description Part Number

1

2

27

1

1

1

Crankshat Assembly (includes items 1, 2 & 27)

Crankshat

Spline Adapter

Snap Ring

PE336K

7204-1089-00A

7204-1088-00A

226-000237-999

3

4

2

2

Crankshat Kit (includes items 1, 2, 3, 4, & 27)Bearing Cone, Tapered Roller

Bearing Cup

PE336KB203-168000-999

202-458000-999

5 1 Bearing Carrier, Gear Adapter 7204-1087-00B



8 6 Lockwasher, Spring, 5/16" 154-516059-244

9 2 Shim Set 7502-0293-00A



includes Shat Bushing

7204-0324-00E

7204-0320-00A

12 1 Gasket 7204-0323-00A



SC-170L, SC-170, SC-170H, SC-170DDItem Quantity Description Part Number


16 1 Lube Oil Pump 7204-0325-00A


18 1 1" x 15" Oil Filter 7602-3005-00A

19 1 1-1/4" Oil Filter Plug 7204-0314-00A


21 8 Screw, Cap; Hex Head, 5/16"-18UNC x 7/8" Long 100-516078-273





26 1 Breather, Filter 7602-3002-10A

28 6 5/8" Socket Head Cap Screw x 2-1/2" 105-058212-454


30 12 3/8" Washer “Stat-O-Seal” 156-038068-999

31 1 Auburn Gear #8 RTF

Lube Assembly 4-1/4" Stroke; Right-Hand and Let-Hand Drive; Right-Hand Shown

28 30

34

3129

32

33

MA-120M, SC-170L, SC-170, SC-170, SC-170H, SC-170DD, RO-185Item Quantity Description Part Number

28 1 Piston, Relie Valve 7204-0318-00A

29 1 Adjusting Screw, Relie Valve 7204-0317-00A

30 1 Spring, Relie Valve 7204-0319-00A

31 2 Washer 204-013009-206

MA-120M, SC-170L, SC-170, SC-170, SC-170H, SC-170DD, RO-185Item Quantity Description Part Number


33 1 7/8" x 14" Thread Jam Nut, Hex 130-078014-243

34 1 Cap, Relie Valve 7204-0316-00A



Series

73

4

5

6

2

1

8

9

10

11

Fluid End Assembly

(Nickel Aluminum Bronze)

MA-95L, MA-120L-HD, SC-170L, RO-185

Item Quantity Description Part Number

1 3 Valve Cover 7204-0058-00B

2 3 Valve Cover Seal 7204-0061-00A

3 1 3/4" Hex Hd. Pipe Plug, S.S. 170-034002-405

4 1 Liquid End, Nickel Aluminum Bronze 7204-0057-10E

5 12 1" x 4-7/8" Stung Box Stud 7507-2791-00A

6 16 1" x 4-1/8" Stud, Discharge Flange 7507-2794-00A

7 12 1" x 3-5/16" Valve Cover Stud 7507-2793-00A

8 40 1"-8NC Nut, Heavy Hex 133-100008-243

9 16 3/4" x 3" Stud, Suction Flange 7507-2735-00A

10 16 3/4"-10NC Nut, Heavy Hex 133-034010-243


12 2 Stud, Power Frame to Fluid End 7204-0865-00A

13 2 1-1/4"-7NC Nut, Heavy Hex 133-114007-243 3

4

5

7

2

1

8

8

Fluid End Assembly

(Ductile Iron)

SC-170DD


1 6 Valve Cover Screw, Ductile Iron 7204-0601-00B

2 6 Valve Cover, S. Steel 7204-1234-00B3 6 Fluid Seal 7204-1235-10A

4 2 1/2" Hex Hd. Pipe Plug 170-012002-237

5 1 Liquid End, Ductile Iron 7204-1196-00D

6 12 1" x 6-1/8" Liner Stud 7204-1143-00A

7 12 1"-8NC Nut, Heavy Hex 133-100008-243

8 32 3/4" Stud, Flange 7507-2735-00A

9 32 3/4"-10NC Nut, Heavy Hex 133-034010-243

10 2 Stud, Power Frame to Fluid End 7204-1227-00A

11 2 1-1/4"-7NC Nut, Heavy Hex 133-114007-243

12 3 Seal Ring 7204-1237-00A

13 3 O-Ring, #252 110-000252-201

14 3 Pipe Plug, 3/4" 170-037002-237 14

1

3

2

1

4

76

11

10

1213

9

8

Fluid End Assembly

(Ductile Iron)

MA-95L, MA-120L-HD, SC-170L



2 3 Valve Cover, Steel 7204-0403-10B



5 1 Liquid End, Ductile Iron, or Tapered Seats 7204-0405-00E

6 12 1" x 4-7/8" Stung Box Stud 7507-2791-00A

7 28 1"- 8NC Nut, Heavy Hex 133-100008-243

8 16 1" x 4-1/8" Stud, Discharge Flange 7507-2794-00A

9 16 3/4" x 3" Stud, Suction Flange 7507-2735-00A

10 16 3/4"-10NC Nut, Heavy Hex 133-034010-243

11 3 1/2" Hex Hd. Pipe Plug 170-012002-237

12 2 Stud, Power Frame to Fluid End* 7204-0865-00A

13 2 1-1/4"-7NC Nut, Heavy Hex* 133-114007-243

14 2 Suction Flange Gasket* 7-3/4" x 5" 204-077050-206

15 2 Discharge Flange Gasket* 4-1/8" x 2-1/2" 204-041025-206

*Not shown on Parts List Drawing



8

7

3

4

5

6

2

1

9

MA-95L, MA-120L-HD





4 4 1/4" Hex Hd. Pipe Plug, S.S. (optional) 170-014002-405

5 1 Liquid End, Forged Steel Weldment 7204-0861-00E

6 12 1" x 4-7/8" Stung Box Stud 7507-2791-00A

7 12 1"-8NC Nut, Heavy Hex 133-100008-243

8 2 Stud, Power Frame to Liquid End 7204-0865-00A

9 2 1-1/4"-7NC Nut, Heavy Hex 133-114007-243

Fluid End Assembly

(Steel Block Weld-Neck Flanges)

3

4

5

1

2

7

6

8

9

10

11

4

3

4

5

6

2

1

7

8

MA-95M, MA-120M


1 3 Valve Cover, Aluminum Bronze 7204-0059-00B

2 3 Valve Cover Gasket 7204-0060-00A

3 12 1" x 3-5/16" Stud, Valve Cover 7507-2793-00A

4 24 1" -8 Thread Nut, Hvy. Hex 133-100008-243

5 12 1" x 4-7/8" Stud, Stung Box 7507-2791-00A

6 16 7/8" x 3-7/8" Stud, Discharge Flange 7507-2736-00A

7 16 7/8"-9 Thread Nut, Hvy. Hex 133-078009-243

8 8 5/8" x 2-3/4" Stud, Suction Flange 7507-2732-00A

9 8 5/8" -11 Thread Nut, Hvy. Hex 133-058011-243

10 1 Liquid End 7204-0013-00E

11 3 3/4" Hex Head Pipe Plug, Stainless Steel 170-034002-405

12 2 1/2" Hex Head Pipe Plug, Stainless Steel* 170-012002-405

13 2 Stud, Power Frame to Liquid End* 7204-0865-00A

14 2 1-1/4"-7 Thread Nut, Heavy Hex* 133-114007-243

Fluid End Assembly

(Nickel Aluminum Bronze Block)

* Note: Not shown on Parts List Drawing

MA-95M, MA-120M, SC-170H




3 12 1" x 4-7/8" Stud, Stung Box 7507-2791-00A

4 12 1"-8 Thread Nut, Hvy. Hex 133-100008-243

5 1 Liquid End* 7204-0875-00E

6 1 1/4" Steel Hex Head Pipe Plug 170-014002-237


8 2 1-1/4"-7 Thread Nut, Heavy Hex 133-114007-243

Fluid End Assembly

(Steel Block)

* Note: Liquid End has integral suction and discharged ring-joint aced connections, as ollows:

Suction 3" – 600#RTJ; Discharged 2" – 600#RTJ



Series

Fluid End Assembly

(Steel Block Weld-Neck Flanges)

MA-120L





4 4 1/4" Hex Hd. Pipe Plug, S.S. (Optional) 170-014002-405


6 12 1" x 4-7/8" Stung Box Stud 7507-2791-00A

7 12 1"-8NC Nut, Heavy Hex 133-100008-243


9 2 1-1/4"-7NC Nut, Heavy Hex 133-114007-243

8

73

4

5

6

21

9

Fluid End Assembly

(Steel Block)

SC-170L


1 3 Valve Cover Screw, Steel 7204-0403-00B

2 3 Valve Cover Screw 7204-0345-00B

3 3 O-Ring 110-000243-201

4 12 1" x 4-7/8" Stung Box Stud 7507-2791-00A

5 12 1"-8 Thread Nut, Hvy, Hex 133-100008-243


7 4 1/4" Steel Hex Head Pipe Plug (Optional) 170-014002-237


9 2 1-1/4"-7 Thread Nut, Heavy Hex 133-114007-243

8

7

3

4

5

6

2

1

9

8 7

34

5

6

21

9

10

6

SC-170

Item Quantity Description Part Number1 3 Valve Cover, Steel 7201-0087-10B


3 12 Stud, Valve Cover 7507-2793-00A

4 12 1"-8UN Nut, Hvy. Hex 133-100008-243

5 1 Liquid End 7204-0952-00K

6 6 Pipe Plug 170-014002-237

7 12 Stung Box Stud 7507-2791-00A

8 12 1"-8NC Nut, Heavy Hex 133-100008-243


10 2 1-1/4"-7NC Nut, Heavy Hex 133-114007-243

Fluid End Assembly

(Steel Block)



Stufng Box Assembly

5

2

4

3

5

2

4

3

Stufng Box Assembly

MA-95M, MA-120M, SC-170H

Plunger

Diameter

Bae

(#2)

Stufng Box Seal, Nitrile

Rubber

(#3)

Stufng Box

*Steel

(#4)

Stufng Box

*Nickel Alum. Bronze

(#4)

Gland

*Steel

(#5)

Gland

*Nickel Alum. Bronze

(#5)2-3/8" 7204-0016-00A 7204-0054-00A 7204-0383-00B 7204-0010-10B 7204-0375-00B 7204-0049-00B

2-1/4" 7204-0016-00A 7204-0054-00A 7204-0383-00B 7204-0010-10C 7204-0375-00B 7204-0049-00B

2-1/8" 7204-0016-00A 7204-0054-00A 7204-0383-00B 7204-0010-10C 7204-0375-00B 7204-0049-00B

2" 7204-0016-00A 7204-0053-00A 7204-0340-00C 7204-0009-10C 7204-0342-00B 7204-0048-00B

1-7/8" 7204-0016-00A 7204-0053-00A 7204-0340-00C 7204-0009-10C 7204-0342-00B 7204-0048-00B

1-3/4" 7204-0016-00A 7204-0053-00A 7204-0340-00C 7204-0009-10C 7204-0342-00B 7204-0048-00B

1-5/8" 7204-0016-00A 7202-0012-00A 7204-0339-00C 7204-0008-10B 7204-0341-00B 7204-0047-00B

1-1/2" 7204-0016-00A 7202-0012-00A 7204-0339-00C 7204-0008-10B 7204-0341-00B 7204-0047-00B

Qty. 3 per pump ea.

*GLAND NUT WRENCH 7204-0464-00B

MA-95L, MA-120L-HD, SC-170L, SC-170, RO-185

Plunger

Diameter

Bae

(#2)

Stufng Box Seal,

Nitrile Rubber

(#3)

Stufng Box,

*Steel

(#4)

Stufng Box,

Stainless Steel

(#4)

Stufng Box, Nickel

Alum. Bronze (#4)

Gland,

*Steel

(#5)

Gland,

Nickel Alum. Bronze

(#5)3-1/2" 7204-0016-00A 7204-0054-00A 7204-0385-00B 7204-0385-10B 7204-0012-10B 7204-0377-00B 7204-0052-00B

3-3/8" 7204-0016-00A 7204-0054-00A 7204-0385-00B 7204-0385-10B 7204-0012-10B 7204-0377-00B 7204-0052-00B

3-1/4" 7204-0016-00A 7204-0054-00A 7204-0385-00B 7204-0385-10B 7204-0012-10B 7204-0377-00B 7204-0052-00B

3-1/8" 7204-0016-00A 7204-0054-00A 7204-0384-00B 7204-0384-10B 7204-0011-10B 7204-0376-00B 7204-0051-00B

3" 7204-0016-00A 7204-0054-00A 7204-0384-00B 7204-0384-10B 7204-0011-10B 7204-0376-00B 7204-0051-00B

2-7/8" 7204-0016-00A 7204-0054-00A 7204-0384-00B 7204-0384-10B 7204-0011-10B 7204-0376-00B 7204-0051-00B

2-3/4" 7204-0016-00A 7204-0054-00A 7204-0384-00B 7204-0383-10B 7204-0011-10B 7204-0376-00B 7204-0051-00B

2-5/8" 7204-0016-00A 7204-0054-00A 7204-0384-00B 7204-0383-10B 7204-0011-10B 7204-0376-00B 7204-0051-00B

2-1/2" 7204-0016-00A 7204-0054-00A 7204-0383-00B 7204-0383-10B 7204-0010-10B 7204-0375-00B 7204-0049-00B

2-3/8" 7204-0016-00A 7204-0054-00A 7204-0383-00B 7204-0383-10B 7204-0010-10B 7204-0375-00B 7204-0049-00B

Qty. 3 per pump ea.

*GLAND NUT WRENCH 7204-0464-00B



Series

5

2

4

3

Stufng Box Assembly

MA-120L

Plunger

Diameter

Bae

(#2)

Stufng Box Seal,

Nitrile Rubber

(#3)

Stufng Box,

Steel

(#4)

Gland Nut,

Steel

(#5)

2-3/8" 7204-0016-00A 7204-0054-00A 7204-1305-02B 7204-0375-00B

Qty. 3 per pump ea.

GLAND NUT WRENCH 7204-0464-00B

11

2

10

1 78

9

4

6

5

3

4" Piston Assembly

Qty. 3 per pump ea.

SC-170L, SC-170DD


1 1 Piston Liner, 4" High Chrome Iron 7204-1106-00K

2 1 Piston Rod 7204-1056-00B

3

4

1 Piston Assembly (Black)

Part o #3 Above

7204-1146-00K

5 1 Gasket, Liner 316-049042-5086 1 Nut, Piston Rod, Sel Locking 151-100008-273

SC-170L, SC-170DD


7 4 Stud (included in FE350) 7204-1143-00A

8 4 Nut, 1"NC (included in FE350) 127-100008-243

9 1 Piston Liner Flange 7204-1054-00B

10 1 Bafe 7204-0016-00A

11 1 O-Ring, Furnished with item #3 110-000214-201



4-1/4" Piston Assembly

5

4

6

9781

10

3

11

2

Qty. 3 per pump

SC-170L


1 1 Piston Liner, 4-1/4" White Ceramic 7204-1265-00K

2 1 Piston Rod 7204-1056-00B

3

4

1 Piston Assembly (Black)

Part o #3 Above

7204-1057-00K

5 1 Gasket, Liner 316-049042-508

6 1 Nut, Piston Rod, Sel Locking 151-100008-273

SC-170L


7 4 Stud 7204-1143-00A

8 4 Nut, 1"NC 127-100008-243


10 1 Bafe 7204-0016-00A

11 1 O-Ring, Furnished with item #3 110-000214-201

Qty. 5 per pump

4-1/2" Piston Assembly

1

7

3

4

5

6

2

8

SC-170


1 1 Piston Liner 7204-1108-00K

2 1 Piston Rod 7204-1056-00B

3 1 Piston Cup Assembly, 4-1/2" 7201-0731-00K

4 Piston Rubber, Furnished with Above 7201-0732-00A

SC-170


5 1 Gasket, Liner 204-049046-206

6 1 Nut, Piston Rod, Sel Locking 151-100008-273

7 4 1"-8NC x 4-1/2" Long 12 Point Screw 100-100008-999




Series

NOTES



STANDARD LIMITED WARRANTYCENTRIFUGAL & RECIPROCATING PUMPS

Aplex warrants its products against defects in material and workmanship for a period of 12 months from the date ofshipment from Aplex or 18 months from the manufacturing date, whichever occurs first - provided that such

products are used in compliance with the requirements of the Aplex catalog and technical manuals.

During the warranty period and subject to the conditions set forth, Aplex, at its discretion, will repair or replace to

the original user, the parts which prove defective in materials and workmanship. Aplex reserves the right to changeor improve its products or any portions thereof without being obligated to provide such a change or improvement

for prior sold and/or shipped units.

Seals, piston cups, packing, plungers, liners and valves used for handling clear, fresh, nonaerated water at atemperature not exceeding 120ºF are warranted for ninety days from date of shipment. All other applications aresubject to a thirty day warranty. Accessories such as motors, engines and auxiliary equipment are warranted by the

respective manufacturer and are excluded in this standard warranty. Under no circumstance will Aplex beresponsible for the cost of field labor, travel expenses, rented equipment, removal/reinstallation costs or freight

expenses to and from the factory or an authorized Aplex service facility.

This limited warranty will not apply: (a) to defects or malfunctions resulting from failure to properly install, operateor maintain the unit in accordance with the printed instructions provided; (b) to failures resulting from abuse,

accident or negligence; (c) to normal maintenance services and parts used in connection with such service; (d) tounits which are not installed in accordance with applicable local codes, ordinances and good trade practices; (e) ifthe unit is moved from its original installation location; (f) if unit is used for purposes other than for what it is designed

and manufactured; (g) to any unit which has been repaired or altered by anyone other than Aplex or an authorizedAplex service provider; (h) to any unit which has been repaired using non factory specified/OEM parts.

Warranty Exclusions: APLEX MAKES NO EXPRESS OR IMPLIED WARRANTIES WHICH EXTEND BEYONDTHE DESCRIPTION ON THE FACE HEREOF. APLEX SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES

OF MERCHANTABILITY AND FITNESS FOR ANY PARTICULAR PURPOSE.

Liability Limitation: IN NO EVENT SHALL APLEX BE LIABLE OR RESPONSIBLE FOR CONSEQUENTIAL,INCIDENTAL OR SPECIAL DAMAGES RESULTING FROM OR RELATED IN ANY MANNER TO ANY APLEX

PRODUCT OR PARTS THEREOF. PERSONAL INJURY AND/OR PROPERTY DAMAGE MAY RESULT FROM

IMPROPER INSTALLATION. APLEX DISCLAIMS ALL LIABILITY, INCLUDING LIABILITY UNDER THISWARRANTY, FOR IMPROPER INSTALLATION. APLEX RECOMMENDS INSTALLATION BY PROFESSIONALS.

Some states do not permit some or all of the above warranty limitations or the exclusion or limitation of incidental

or consequential damages and therefore such limitations may not apply to you. No warranties or representationsat any time made by any representatives of Aplex shall vary or expand the provision hereof.

1101 Myers ParkwayAshland, Ohio 44805-1969

419-289-1144Fax: 419-289-6658

www femyers com

Aplex Pump

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